Home / 2,721.38-3,755.96-1,543.14

Finding the Fourth Proportional to 2,721.38, 3,755.96 and 1,543.14

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Solution

The fourth proportional to 2,721.38, 3,755.96 and 1,543.14 is: 2,129.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.38 : 3,755.96 = 1,543.14 : x
  2. Step 2: Convert to fraction form
    2,721.38/3,755.96 = 1,543.14/x
  3. Step 3: Cross multiply
    2,721.38x = 3,755.96 × 1,543.14
  4. Step 4: Simplify right side
    2,721.38x = 5,795,970.19
  5. Step 5: Solve for x
    x = 5,795,970.19/2,721.38
  6. Step 6: Final answer
    x = 2,129.79

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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.