Home / 5,151.25-7,721.61-2,517.40

Finding the Fourth Proportional to 5,151.25, 7,721.61 and 2,517.40

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Solution

The fourth proportional to 5,151.25, 7,721.61 and 2,517.40 is: 3,773.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,151.25 : 7,721.61 = 2,517.40 : x
  2. Step 2: Convert to fraction form
    5,151.25/7,721.61 = 2,517.40/x
  3. Step 3: Cross multiply
    5,151.25x = 7,721.61 × 2,517.40
  4. Step 4: Simplify right side
    5,151.25x = 19,438,381.01
  5. Step 5: Solve for x
    x = 19,438,381.01/5,151.25
  6. Step 6: Final answer
    x = 3,773.53

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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.