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Finding the Fourth Proportional to 9,167.64, 12,650.57 and 5,390.97

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Solution

The fourth proportional to 9,167.64, 12,650.57 and 5,390.97 is: 7,439.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,167.64 : 12,650.57 = 5,390.97 : x
  2. Step 2: Convert to fraction form
    9,167.64/12,650.57 = 5,390.97/x
  3. Step 3: Cross multiply
    9,167.64x = 12,650.57 × 5,390.97
  4. Step 4: Simplify right side
    9,167.64x = 68,198,780.10
  5. Step 5: Solve for x
    x = 68,198,780.10/9,167.64
  6. Step 6: Final answer
    x = 7,439.08

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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.