Home / 1,854.11-2,781.17-621.52

Finding the Fourth Proportional to 1,854.11, 2,781.17 and 621.52

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Solution

The fourth proportional to 1,854.11, 2,781.17 and 621.52 is: 932.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,854.11 : 2,781.17 = 621.52 : x
  2. Step 2: Convert to fraction form
    1,854.11/2,781.17 = 621.52/x
  3. Step 3: Cross multiply
    1,854.11x = 2,781.17 × 621.52
  4. Step 4: Simplify right side
    1,854.11x = 1,728,549.67
  5. Step 5: Solve for x
    x = 1,728,549.67/1,854.11
  6. Step 6: Final answer
    x = 932.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.