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Finding the Fourth Proportional to 2,591.97, 3,888.21 and 743.14

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Solution

The fourth proportional to 2,591.97, 3,888.21 and 743.14 is: 1,114.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,591.97 : 3,888.21 = 743.14 : x
  2. Step 2: Convert to fraction form
    2,591.97/3,888.21 = 743.14/x
  3. Step 3: Cross multiply
    2,591.97x = 3,888.21 × 743.14
  4. Step 4: Simplify right side
    2,591.97x = 2,889,484.38
  5. Step 5: Solve for x
    x = 2,889,484.38/2,591.97
  6. Step 6: Final answer
    x = 1,114.78

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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.