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Finding the Fourth Proportional to 8,766.10, 13,149.15 and 5,310.10

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Solution

The fourth proportional to 8,766.10, 13,149.15 and 5,310.10 is: 7,965.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,766.10 : 13,149.15 = 5,310.10 : x
  2. Step 2: Convert to fraction form
    8,766.10/13,149.15 = 5,310.10/x
  3. Step 3: Cross multiply
    8,766.10x = 13,149.15 × 5,310.10
  4. Step 4: Simplify right side
    8,766.10x = 69,823,301.42
  5. Step 5: Solve for x
    x = 69,823,301.42/8,766.10
  6. Step 6: Final answer
    x = 7,965.15

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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.