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Finding the Fourth Proportional to 9,001.68, 13,487.40 and 6,391.68

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Solution

The fourth proportional to 9,001.68, 13,487.40 and 6,391.68 is: 9,576.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,001.68 : 13,487.40 = 6,391.68 : x
  2. Step 2: Convert to fraction form
    9,001.68/13,487.40 = 6,391.68/x
  3. Step 3: Cross multiply
    9,001.68x = 13,487.40 × 6,391.68
  4. Step 4: Simplify right side
    9,001.68x = 86,207,144.83
  5. Step 5: Solve for x
    x = 86,207,144.83/9,001.68
  6. Step 6: Final answer
    x = 9,576.78

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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.