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Finding the Fourth Proportional to 8,537.20, 12,789.04 and 7,608.40

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Solution

The fourth proportional to 8,537.20, 12,789.04 and 7,608.40 is: 11,397.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,537.20 : 12,789.04 = 7,608.40 : x
  2. Step 2: Convert to fraction form
    8,537.20/12,789.04 = 7,608.40/x
  3. Step 3: Cross multiply
    8,537.20x = 12,789.04 × 7,608.40
  4. Step 4: Simplify right side
    8,537.20x = 97,304,131.94
  5. Step 5: Solve for x
    x = 97,304,131.94/8,537.20
  6. Step 6: Final answer
    x = 11,397.66

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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.