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Finding the Fourth Proportional to 8,432.40, 12,672.90 and 7,363.20

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Solution

The fourth proportional to 8,432.40, 12,672.90 and 7,363.20 is: 11,066.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,432.40 : 12,672.90 = 7,363.20 : x
  2. Step 2: Convert to fraction form
    8,432.40/12,672.90 = 7,363.20/x
  3. Step 3: Cross multiply
    8,432.40x = 12,672.90 × 7,363.20
  4. Step 4: Simplify right side
    8,432.40x = 93,313,097.28
  5. Step 5: Solve for x
    x = 93,313,097.28/8,432.40
  6. Step 6: Final answer
    x = 11,066.02

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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.