Home / 7,421.43-11,132.15-2,981.13

Finding the Fourth Proportional to 7,421.43, 11,132.15 and 2,981.13

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Solution

The fourth proportional to 7,421.43, 11,132.15 and 2,981.13 is: 4,471.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.43 : 11,132.15 = 2,981.13 : x
  2. Step 2: Convert to fraction form
    7,421.43/11,132.15 = 2,981.13/x
  3. Step 3: Cross multiply
    7,421.43x = 11,132.15 × 2,981.13
  4. Step 4: Simplify right side
    7,421.43x = 33,186,371.42
  5. Step 5: Solve for x
    x = 33,186,371.42/7,421.43
  6. Step 6: Final answer
    x = 4,471.70

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.