Home / 8,719.52-13,079.20-2,145.76

Finding the Fourth Proportional to 8,719.52, 13,079.20 and 2,145.76

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Solution

The fourth proportional to 8,719.52, 13,079.20 and 2,145.76 is: 3,218.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,719.52 : 13,079.20 = 2,145.76 : x
  2. Step 2: Convert to fraction form
    8,719.52/13,079.20 = 2,145.76/x
  3. Step 3: Cross multiply
    8,719.52x = 13,079.20 × 2,145.76
  4. Step 4: Simplify right side
    8,719.52x = 28,064,824.19
  5. Step 5: Solve for x
    x = 28,064,824.19/8,719.52
  6. Step 6: Final answer
    x = 3,218.62

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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.