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Finding the Fourth Proportional to 2,569.43, 3,854.15 and 621.63

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Solution

The fourth proportional to 2,569.43, 3,854.15 and 621.63 is: 932.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,569.43 : 3,854.15 = 621.63 : x
  2. Step 2: Convert to fraction form
    2,569.43/3,854.15 = 621.63/x
  3. Step 3: Cross multiply
    2,569.43x = 3,854.15 × 621.63
  4. Step 4: Simplify right side
    2,569.43x = 2,395,855.26
  5. Step 5: Solve for x
    x = 2,395,855.26/2,569.43
  6. Step 6: Final answer
    x = 932.45

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Similar ratio
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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.