Home / 3,972.28-5,480.62-3,130.38

Finding the Fourth Proportional to 3,972.28, 5,480.62 and 3,130.38

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Solution

The fourth proportional to 3,972.28, 5,480.62 and 3,130.38 is: 4,319.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.28 : 5,480.62 = 3,130.38 : x
  2. Step 2: Convert to fraction form
    3,972.28/5,480.62 = 3,130.38/x
  3. Step 3: Cross multiply
    3,972.28x = 5,480.62 × 3,130.38
  4. Step 4: Simplify right side
    3,972.28x = 17,156,423.24
  5. Step 5: Solve for x
    x = 17,156,423.24/3,972.28
  6. Step 6: Final answer
    x = 4,319.04

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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.