Home / 7,677.30-11,515.95-5,481.20

Finding the Fourth Proportional to 7,677.30, 11,515.95 and 5,481.20

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Solution

The fourth proportional to 7,677.30, 11,515.95 and 5,481.20 is: 8,221.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,677.30 : 11,515.95 = 5,481.20 : x
  2. Step 2: Convert to fraction form
    7,677.30/11,515.95 = 5,481.20/x
  3. Step 3: Cross multiply
    7,677.30x = 11,515.95 × 5,481.20
  4. Step 4: Simplify right side
    7,677.30x = 63,121,167.56
  5. Step 5: Solve for x
    x = 63,121,167.56/7,677.30
  6. Step 6: Final answer
    x = 8,221.79

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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.