Home / 7,471.90-11,207.85-5,139.10

Finding the Fourth Proportional to 7,471.90, 11,207.85 and 5,139.10

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Solution

The fourth proportional to 7,471.90, 11,207.85 and 5,139.10 is: 7,708.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,471.90 : 11,207.85 = 5,139.10 : x
  2. Step 2: Convert to fraction form
    7,471.90/11,207.85 = 5,139.10/x
  3. Step 3: Cross multiply
    7,471.90x = 11,207.85 × 5,139.10
  4. Step 4: Simplify right side
    7,471.90x = 57,598,261.94
  5. Step 5: Solve for x
    x = 57,598,261.94/7,471.90
  6. Step 6: Final answer
    x = 7,708.65

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Half scale
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Double scale
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Similar ratio
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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.