Home / 3,715.19-5,127.16-2,143.38

Finding the Fourth Proportional to 3,715.19, 5,127.16 and 2,143.38

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Solution

The fourth proportional to 3,715.19, 5,127.16 and 2,143.38 is: 2,957.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,715.19 : 5,127.16 = 2,143.38 : x
  2. Step 2: Convert to fraction form
    3,715.19/5,127.16 = 2,143.38/x
  3. Step 3: Cross multiply
    3,715.19x = 5,127.16 × 2,143.38
  4. Step 4: Simplify right side
    3,715.19x = 10,989,452.20
  5. Step 5: Solve for x
    x = 10,989,452.20/3,715.19
  6. Step 6: Final answer
    x = 2,957.98

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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.