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Finding the Fourth Proportional to 8,447.59, 12,652.92 and 4,280.44

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Solution

The fourth proportional to 8,447.59, 12,652.92 and 4,280.44 is: 6,411.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,447.59 : 12,652.92 = 4,280.44 : x
  2. Step 2: Convert to fraction form
    8,447.59/12,652.92 = 4,280.44/x
  3. Step 3: Cross multiply
    8,447.59x = 12,652.92 × 4,280.44
  4. Step 4: Simplify right side
    8,447.59x = 54,160,064.88
  5. Step 5: Solve for x
    x = 54,160,064.88/8,447.59
  6. Step 6: Final answer
    x = 6,411.30

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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.