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Finding the Fourth Proportional to 8,432.79, 12,649.19 and 2,589.45

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Solution

The fourth proportional to 8,432.79, 12,649.19 and 2,589.45 is: 3,884.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,432.79 : 12,649.19 = 2,589.45 : x
  2. Step 2: Convert to fraction form
    8,432.79/12,649.19 = 2,589.45/x
  3. Step 3: Cross multiply
    8,432.79x = 12,649.19 × 2,589.45
  4. Step 4: Simplify right side
    8,432.79x = 32,754,432.10
  5. Step 5: Solve for x
    x = 32,754,432.10/8,432.79
  6. Step 6: Final answer
    x = 3,884.18

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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.