Home / 9,125.38-12,591.78-5,091.74

Finding the Fourth Proportional to 9,125.38, 12,591.78 and 5,091.74

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Solution

The fourth proportional to 9,125.38, 12,591.78 and 5,091.74 is: 7,025.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,125.38 : 12,591.78 = 5,091.74 : x
  2. Step 2: Convert to fraction form
    9,125.38/12,591.78 = 5,091.74/x
  3. Step 3: Cross multiply
    9,125.38x = 12,591.78 × 5,091.74
  4. Step 4: Simplify right side
    9,125.38x = 64,114,013.97
  5. Step 5: Solve for x
    x = 64,114,013.97/9,125.38
  6. Step 6: Final answer
    x = 7,025.90

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Half scale
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Double scale
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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.