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Finding the Fourth Proportional to 5,660.78, 8,491.16 and 3,712.53

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Solution

The fourth proportional to 5,660.78, 8,491.16 and 3,712.53 is: 5,568.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,660.78 : 8,491.16 = 3,712.53 : x
  2. Step 2: Convert to fraction form
    5,660.78/8,491.16 = 3,712.53/x
  3. Step 3: Cross multiply
    5,660.78x = 8,491.16 × 3,712.53
  4. Step 4: Simplify right side
    5,660.78x = 31,523,663.67
  5. Step 5: Solve for x
    x = 31,523,663.67/5,660.78
  6. Step 6: Final answer
    x = 5,568.79

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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.