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Finding the Fourth Proportional to 8,937.61, 12,335.17 and 5,160.02

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Solution

The fourth proportional to 8,937.61, 12,335.17 and 5,160.02 is: 7,121.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,937.61 : 12,335.17 = 5,160.02 : x
  2. Step 2: Convert to fraction form
    8,937.61/12,335.17 = 5,160.02/x
  3. Step 3: Cross multiply
    8,937.61x = 12,335.17 × 5,160.02
  4. Step 4: Simplify right side
    8,937.61x = 63,649,662.23
  5. Step 5: Solve for x
    x = 63,649,662.23/8,937.61
  6. Step 6: Final answer
    x = 7,121.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.