Home / 5,439.76-8,151.12-3,972.16

Finding the Fourth Proportional to 5,439.76, 8,151.12 and 3,972.16

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Solution

The fourth proportional to 5,439.76, 8,151.12 and 3,972.16 is: 5,952.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,439.76 : 8,151.12 = 3,972.16 : x
  2. Step 2: Convert to fraction form
    5,439.76/8,151.12 = 3,972.16/x
  3. Step 3: Cross multiply
    5,439.76x = 8,151.12 × 3,972.16
  4. Step 4: Simplify right side
    5,439.76x = 32,377,552.82
  5. Step 5: Solve for x
    x = 32,377,552.82/5,439.76
  6. Step 6: Final answer
    x = 5,952.02

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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.