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Finding the Fourth Proportional to 8,487.59, 12,730.77 and 2,644.04

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Solution

The fourth proportional to 8,487.59, 12,730.77 and 2,644.04 is: 3,965.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,487.59 : 12,730.77 = 2,644.04 : x
  2. Step 2: Convert to fraction form
    8,487.59/12,730.77 = 2,644.04/x
  3. Step 3: Cross multiply
    8,487.59x = 12,730.77 × 2,644.04
  4. Step 4: Simplify right side
    8,487.59x = 33,660,696.94
  5. Step 5: Solve for x
    x = 33,660,696.94/8,487.59
  6. Step 6: Final answer
    x = 3,965.87

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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.