Home / 3,129.40-4,318.10-1,732.14

Finding the Fourth Proportional to 3,129.40, 4,318.10 and 1,732.14

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Solution

The fourth proportional to 3,129.40, 4,318.10 and 1,732.14 is: 2,390.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.40 : 4,318.10 = 1,732.14 : x
  2. Step 2: Convert to fraction form
    3,129.40/4,318.10 = 1,732.14/x
  3. Step 3: Cross multiply
    3,129.40x = 4,318.10 × 1,732.14
  4. Step 4: Simplify right side
    3,129.40x = 7,479,553.73
  5. Step 5: Solve for x
    x = 7,479,553.73/3,129.40
  6. Step 6: Final answer
    x = 2,390.09

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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.