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Finding the Fourth Proportional to 2,569.72, 3,854.58 and 621.92

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Solution

The fourth proportional to 2,569.72, 3,854.58 and 621.92 is: 932.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,569.72 : 3,854.58 = 621.92 : x
  2. Step 2: Convert to fraction form
    2,569.72/3,854.58 = 621.92/x
  3. Step 3: Cross multiply
    2,569.72x = 3,854.58 × 621.92
  4. Step 4: Simplify right side
    2,569.72x = 2,397,240.39
  5. Step 5: Solve for x
    x = 2,397,240.39/2,569.72
  6. Step 6: Final answer
    x = 932.88

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1.5x scale

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.