Home / 2,672.29-3,687.65-1,553.18

Finding the Fourth Proportional to 2,672.29, 3,687.65 and 1,553.18

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Solution

The fourth proportional to 2,672.29, 3,687.65 and 1,553.18 is: 2,143.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,672.29 : 3,687.65 = 1,553.18 : x
  2. Step 2: Convert to fraction form
    2,672.29/3,687.65 = 1,553.18/x
  3. Step 3: Cross multiply
    2,672.29x = 3,687.65 × 1,553.18
  4. Step 4: Simplify right side
    2,672.29x = 5,727,565.79
  5. Step 5: Solve for x
    x = 5,727,565.79/2,672.29
  6. Step 6: Final answer
    x = 2,143.32

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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.