Home / 8,720.28-13,080.13-3,789.93

Finding the Fourth Proportional to 8,720.28, 13,080.13 and 3,789.93

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Solution

The fourth proportional to 8,720.28, 13,080.13 and 3,789.93 is: 5,684.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.28 : 13,080.13 = 3,789.93 : x
  2. Step 2: Convert to fraction form
    8,720.28/13,080.13 = 3,789.93/x
  3. Step 3: Cross multiply
    8,720.28x = 13,080.13 × 3,789.93
  4. Step 4: Simplify right side
    8,720.28x = 49,572,711.69
  5. Step 5: Solve for x
    x = 49,572,711.69/8,720.28
  6. Step 6: Final answer
    x = 5,684.76

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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.