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Finding the Fourth Proportional to 8,772.91, 13,159.36 and 4,387.97

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Solution

The fourth proportional to 8,772.91, 13,159.36 and 4,387.97 is: 6,581.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,772.91 : 13,159.36 = 4,387.97 : x
  2. Step 2: Convert to fraction form
    8,772.91/13,159.36 = 4,387.97/x
  3. Step 3: Cross multiply
    8,772.91x = 13,159.36 × 4,387.97
  4. Step 4: Simplify right side
    8,772.91x = 57,742,915.28
  5. Step 5: Solve for x
    x = 57,742,915.28/8,772.91
  6. Step 6: Final answer
    x = 6,581.96

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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.