Home / 3,129.68-4,318.80-1,732.52

Finding the Fourth Proportional to 3,129.68, 4,318.80 and 1,732.52

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Solution

The fourth proportional to 3,129.68, 4,318.80 and 1,732.52 is: 2,390.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.68 : 4,318.80 = 1,732.52 : x
  2. Step 2: Convert to fraction form
    3,129.68/4,318.80 = 1,732.52/x
  3. Step 3: Cross multiply
    3,129.68x = 4,318.80 × 1,732.52
  4. Step 4: Simplify right side
    3,129.68x = 7,482,407.38
  5. Step 5: Solve for x
    x = 7,482,407.38/3,129.68
  6. Step 6: Final answer
    x = 2,390.79

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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.