Home / 10,479-15,719.46-2,687.88

Finding the Fourth Proportional to 10,479, 15,719.46 and 2,687.88

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Solution

The fourth proportional to 10,479, 15,719.46 and 2,687.88 is: 4,032.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,479 : 15,719.46 = 2,687.88 : x
  2. Step 2: Convert to fraction form
    10,479/15,719.46 = 2,687.88/x
  3. Step 3: Cross multiply
    10,479x = 15,719.46 × 2,687.88
  4. Step 4: Simplify right side
    10,479x = 42,252,022.14
  5. Step 5: Solve for x
    x = 42,252,022.14/10,479
  6. Step 6: Final answer
    x = 4,032.07

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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.