diff --git a/activesupport/CHANGELOG.md b/activesupport/CHANGELOG.md
index fb9f5a447c5b6d89deb4cc16bdb88ce4ae39f7f6..aefc94e0d9f98e32bdd2b6eb504b2655e9a1806b 100644
--- a/activesupport/CHANGELOG.md
+++ b/activesupport/CHANGELOG.md
@@ -1,3 +1,8 @@
+*   Fixed a bug that `ArrayInquirer#respond_to_missing?` does not fallback to
+    `Array#respond_to_missing?`.
+
+    *Akira Matsuda*
+
 *   Fix inconsistent results when parsing large durations and constructing durations from code
 
         ActiveSupport::Duration.parse('P3Y') == 3.years # It should be true
diff --git a/activesupport/lib/active_support/array_inquirer.rb b/activesupport/lib/active_support/array_inquirer.rb
index 85122e39b209479ede460eacfe9ff59e44b8ae4d..d364996e0bd546af4506be04f83b3e5e4d446981 100644
--- a/activesupport/lib/active_support/array_inquirer.rb
+++ b/activesupport/lib/active_support/array_inquirer.rb
@@ -32,7 +32,7 @@ def any?(*candidates, &block)
 
     private
       def respond_to_missing?(name, include_private = false)
-        name[-1] == "?"
+        (name[-1] == "?") || super
       end
 
       def method_missing(name, *args)
diff --git a/activesupport/test/array_inquirer_test.rb b/activesupport/test/array_inquirer_test.rb
index 4d3f5b001ce8876f91c974e11d594838eefb9613..3ed48dd49de282ec4e7bdeb2c7811a2d249999f9 100644
--- a/activesupport/test/array_inquirer_test.rb
+++ b/activesupport/test/array_inquirer_test.rb
@@ -38,4 +38,18 @@ def test_inquiry
     assert_instance_of ActiveSupport::ArrayInquirer, result
     assert_equal @array_inquirer, result
   end
+
+  def test_respond_to_fallback_to_array_respond_to
+    arr = ActiveSupport::ArrayInquirer.new([:x])
+    # This kind of emulates a situation that Array#respond_to_missing? is defined
+    arr.singleton_class.class_eval do
+      def respond_to_missing?(name, _include_private = false)
+        (name == :foo) || super
+      end
+    end
+
+    assert_respond_to arr, :can_you_hear_me?
+    assert_respond_to arr, :foo
+    assert_not_respond_to arr, :nope
+  end
 end