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Finding the Fourth Proportional to 2,452.47, 3,677.55 and 891.38

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Solution

The fourth proportional to 2,452.47, 3,677.55 and 891.38 is: 1,336.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,452.47 : 3,677.55 = 891.38 : x
  2. Step 2: Convert to fraction form
    2,452.47/3,677.55 = 891.38/x
  3. Step 3: Cross multiply
    2,452.47x = 3,677.55 × 891.38
  4. Step 4: Simplify right side
    2,452.47x = 3,278,076.13
  5. Step 5: Solve for x
    x = 3,278,076.13/2,452.47
  6. Step 6: Final answer
    x = 1,336.64

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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.