Home / 3,942-9,135

Finding the Third Proportional to 3,942 and 9,135

Calculator

Solution

The third proportional to 3,942 and 9,135 is: 21,169.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942 : 9,135 = 9,135 : x
  2. Step 2: Convert to fraction form
    3,942/9,135 = 9,135/x
  3. Step 3: Cross multiply
    3,942x = 9,135 × 9,135
  4. Step 4: Simplify right side
    3,942x = 83,448,225
  5. Step 5: Solve for x
    x = 83,448,225/3,942
  6. Step 6: Final answer
    x = 21,169.01

Related Problems

Find third proportional to 1,971 and 4,567.50
Half scale
Find third proportional to 7,884 and 18,270
Double scale
Find third proportional to 3,944 and 9,140
Similar ratio
Find third proportional to 5,913 and 13,702.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.