Home / 2,721.10-3,755.35-1,542.38

Finding the Fourth Proportional to 2,721.10, 3,755.35 and 1,542.38

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Solution

The fourth proportional to 2,721.10, 3,755.35 and 1,542.38 is: 2,128.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.10 : 3,755.35 = 1,542.38 : x
  2. Step 2: Convert to fraction form
    2,721.10/3,755.35 = 1,542.38/x
  3. Step 3: Cross multiply
    2,721.10x = 3,755.35 × 1,542.38
  4. Step 4: Simplify right side
    2,721.10x = 5,792,176.73
  5. Step 5: Solve for x
    x = 5,792,176.73/2,721.10
  6. Step 6: Final answer
    x = 2,128.62

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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.