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Finding the Fourth Proportional to 8,487.72, 12,716.88 and 4,594.80

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Solution

The fourth proportional to 8,487.72, 12,716.88 and 4,594.80 is: 6,884.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,487.72 : 12,716.88 = 4,594.80 : x
  2. Step 2: Convert to fraction form
    8,487.72/12,716.88 = 4,594.80/x
  3. Step 3: Cross multiply
    8,487.72x = 12,716.88 × 4,594.80
  4. Step 4: Simplify right side
    8,487.72x = 58,431,520.22
  5. Step 5: Solve for x
    x = 58,431,520.22/8,487.72
  6. Step 6: Final answer
    x = 6,884.24

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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.