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Finding the Fourth Proportional to 8,637.52, 12,956.28 and 5,578.96

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Solution

The fourth proportional to 8,637.52, 12,956.28 and 5,578.96 is: 8,368.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,637.52 : 12,956.28 = 5,578.96 : x
  2. Step 2: Convert to fraction form
    8,637.52/12,956.28 = 5,578.96/x
  3. Step 3: Cross multiply
    8,637.52x = 12,956.28 × 5,578.96
  4. Step 4: Simplify right side
    8,637.52x = 72,282,567.87
  5. Step 5: Solve for x
    x = 72,282,567.87/8,637.52
  6. Step 6: Final answer
    x = 8,368.44

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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.