Home / 8,715.20-13,061.86-4,324.79

Finding the Fourth Proportional to 8,715.20, 13,061.86 and 4,324.79

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Solution

The fourth proportional to 8,715.20, 13,061.86 and 4,324.79 is: 6,481.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,715.20 : 13,061.86 = 4,324.79 : x
  2. Step 2: Convert to fraction form
    8,715.20/13,061.86 = 4,324.79/x
  3. Step 3: Cross multiply
    8,715.20x = 13,061.86 × 4,324.79
  4. Step 4: Simplify right side
    8,715.20x = 56,489,823.35
  5. Step 5: Solve for x
    x = 56,489,823.35/8,715.20
  6. Step 6: Final answer
    x = 6,481.76

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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.