Home / 8,691.28-11,989.55-5,499.19

Finding the Fourth Proportional to 8,691.28, 11,989.55 and 5,499.19

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Solution

The fourth proportional to 8,691.28, 11,989.55 and 5,499.19 is: 7,586.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691.28 : 11,989.55 = 5,499.19 : x
  2. Step 2: Convert to fraction form
    8,691.28/11,989.55 = 5,499.19/x
  3. Step 3: Cross multiply
    8,691.28x = 11,989.55 × 5,499.19
  4. Step 4: Simplify right side
    8,691.28x = 65,932,811.27
  5. Step 5: Solve for x
    x = 65,932,811.27/8,691.28
  6. Step 6: Final answer
    x = 7,586.09

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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.