Home / 3,147.14-4,721.31-1,687.92

Finding the Fourth Proportional to 3,147.14, 4,721.31 and 1,687.92

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Solution

The fourth proportional to 3,147.14, 4,721.31 and 1,687.92 is: 2,532.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.14 : 4,721.31 = 1,687.92 : x
  2. Step 2: Convert to fraction form
    3,147.14/4,721.31 = 1,687.92/x
  3. Step 3: Cross multiply
    3,147.14x = 4,721.31 × 1,687.92
  4. Step 4: Simplify right side
    3,147.14x = 7,969,193.58
  5. Step 5: Solve for x
    x = 7,969,193.58/3,147.14
  6. Step 6: Final answer
    x = 2,532.20

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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.