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Finding the Fourth Proportional to 8,869.28, 13,292.32 and 6,412.32

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Solution

The fourth proportional to 8,869.28, 13,292.32 and 6,412.32 is: 9,610.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,869.28 : 13,292.32 = 6,412.32 : x
  2. Step 2: Convert to fraction form
    8,869.28/13,292.32 = 6,412.32/x
  3. Step 3: Cross multiply
    8,869.28x = 13,292.32 × 6,412.32
  4. Step 4: Simplify right side
    8,869.28x = 85,234,609.38
  5. Step 5: Solve for x
    x = 85,234,609.38/8,869.28
  6. Step 6: Final answer
    x = 9,610.09

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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.