Home / 7,127.57-9,834.95-3,983.15

Finding the Fourth Proportional to 7,127.57, 9,834.95 and 3,983.15

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Solution

The fourth proportional to 7,127.57, 9,834.95 and 3,983.15 is: 5,496.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.57 : 9,834.95 = 3,983.15 : x
  2. Step 2: Convert to fraction form
    7,127.57/9,834.95 = 3,983.15/x
  3. Step 3: Cross multiply
    7,127.57x = 9,834.95 × 3,983.15
  4. Step 4: Simplify right side
    7,127.57x = 39,174,061.18
  5. Step 5: Solve for x
    x = 39,174,061.18/7,127.57
  6. Step 6: Final answer
    x = 5,496.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.