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Finding the Fourth Proportional to 9,358.29, 12,915.63 and 5,909.13

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Solution

The fourth proportional to 9,358.29, 12,915.63 and 5,909.13 is: 8,155.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,358.29 : 12,915.63 = 5,909.13 : x
  2. Step 2: Convert to fraction form
    9,358.29/12,915.63 = 5,909.13/x
  3. Step 3: Cross multiply
    9,358.29x = 12,915.63 × 5,909.13
  4. Step 4: Simplify right side
    9,358.29x = 76,320,136.70
  5. Step 5: Solve for x
    x = 76,320,136.70/9,358.29
  6. Step 6: Final answer
    x = 8,155.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.