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Finding the Fourth Proportional to 9,179.76, 12,498.60 and 9,150.60

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Solution

The fourth proportional to 9,179.76, 12,498.60 and 9,150.60 is: 12,458.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,179.76 : 12,498.60 = 9,150.60 : x
  2. Step 2: Convert to fraction form
    9,179.76/12,498.60 = 9,150.60/x
  3. Step 3: Cross multiply
    9,179.76x = 12,498.60 × 9,150.60
  4. Step 4: Simplify right side
    9,179.76x = 114,369,689.16
  5. Step 5: Solve for x
    x = 114,369,689.16/9,179.76
  6. Step 6: Final answer
    x = 12,458.90

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.