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Finding the Fourth Proportional to 1,672, 2,508.18 and 747.97

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Solution

The fourth proportional to 1,672, 2,508.18 and 747.97 is: 1,122.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,672 : 2,508.18 = 747.97 : x
  2. Step 2: Convert to fraction form
    1,672/2,508.18 = 747.97/x
  3. Step 3: Cross multiply
    1,672x = 2,508.18 × 747.97
  4. Step 4: Simplify right side
    1,672x = 1,876,043.39
  5. Step 5: Solve for x
    x = 1,876,043.39/1,672
  6. Step 6: Final answer
    x = 1,122.04

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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.