Home / 2,721.65-3,755.63-1,542.65

Finding the Fourth Proportional to 2,721.65, 3,755.63 and 1,542.65

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Solution

The fourth proportional to 2,721.65, 3,755.63 and 1,542.65 is: 2,128.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.65 : 3,755.63 = 1,542.65 : x
  2. Step 2: Convert to fraction form
    2,721.65/3,755.63 = 1,542.65/x
  3. Step 3: Cross multiply
    2,721.65x = 3,755.63 × 1,542.65
  4. Step 4: Simplify right side
    2,721.65x = 5,793,607.70
  5. Step 5: Solve for x
    x = 5,793,607.70/2,721.65
  6. Step 6: Final answer
    x = 2,128.72

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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.