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Finding the Fourth Proportional to 5,728.78, 8,592.88 and 3,358.20

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Solution

The fourth proportional to 5,728.78, 8,592.88 and 3,358.20 is: 5,037.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,728.78 : 8,592.88 = 3,358.20 : x
  2. Step 2: Convert to fraction form
    5,728.78/8,592.88 = 3,358.20/x
  3. Step 3: Cross multiply
    5,728.78x = 8,592.88 × 3,358.20
  4. Step 4: Simplify right side
    5,728.78x = 28,856,609.62
  5. Step 5: Solve for x
    x = 28,856,609.62/5,728.78
  6. Step 6: Final answer
    x = 5,037.13

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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.