Home / 5,147.56-7,721.27-1,637.79

Finding the Fourth Proportional to 5,147.56, 7,721.27 and 1,637.79

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Solution

The fourth proportional to 5,147.56, 7,721.27 and 1,637.79 is: 2,456.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.56 : 7,721.27 = 1,637.79 : x
  2. Step 2: Convert to fraction form
    5,147.56/7,721.27 = 1,637.79/x
  3. Step 3: Cross multiply
    5,147.56x = 7,721.27 × 1,637.79
  4. Step 4: Simplify right side
    5,147.56x = 12,645,787.79
  5. Step 5: Solve for x
    x = 12,645,787.79/5,147.56
  6. Step 6: Final answer
    x = 2,456.66

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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.