Home / 2,721.35-3,755.31-1,542.40

Finding the Fourth Proportional to 2,721.35, 3,755.31 and 1,542.40

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Solution

The fourth proportional to 2,721.35, 3,755.31 and 1,542.40 is: 2,128.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.35 : 3,755.31 = 1,542.40 : x
  2. Step 2: Convert to fraction form
    2,721.35/3,755.31 = 1,542.40/x
  3. Step 3: Cross multiply
    2,721.35x = 3,755.31 × 1,542.40
  4. Step 4: Simplify right side
    2,721.35x = 5,792,190.14
  5. Step 5: Solve for x
    x = 5,792,190.14/2,721.35
  6. Step 6: Final answer
    x = 2,128.43

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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.