Home / 2,721.61-3,755.90-1,542.86

Finding the Fourth Proportional to 2,721.61, 3,755.90 and 1,542.86

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Solution

The fourth proportional to 2,721.61, 3,755.90 and 1,542.86 is: 2,129.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.61 : 3,755.90 = 1,542.86 : x
  2. Step 2: Convert to fraction form
    2,721.61/3,755.90 = 1,542.86/x
  3. Step 3: Cross multiply
    2,721.61x = 3,755.90 × 1,542.86
  4. Step 4: Simplify right side
    2,721.61x = 5,794,801.38
  5. Step 5: Solve for x
    x = 5,794,801.38/2,721.61
  6. Step 6: Final answer
    x = 2,129.18

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1.5x scale

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.