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Finding the Fourth Proportional to 8,411.04, 12,551.76 and 7,387.20

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Solution

The fourth proportional to 8,411.04, 12,551.76 and 7,387.20 is: 11,023.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,411.04 : 12,551.76 = 7,387.20 : x
  2. Step 2: Convert to fraction form
    8,411.04/12,551.76 = 7,387.20/x
  3. Step 3: Cross multiply
    8,411.04x = 12,551.76 × 7,387.20
  4. Step 4: Simplify right side
    8,411.04x = 92,722,361.47
  5. Step 5: Solve for x
    x = 92,722,361.47/8,411.04
  6. Step 6: Final answer
    x = 11,023.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.