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Finding the Fourth Proportional to 2,691.38, 4,036.10 and 935.90

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Solution

The fourth proportional to 2,691.38, 4,036.10 and 935.90 is: 1,403.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.38 : 4,036.10 = 935.90 : x
  2. Step 2: Convert to fraction form
    2,691.38/4,036.10 = 935.90/x
  3. Step 3: Cross multiply
    2,691.38x = 4,036.10 × 935.90
  4. Step 4: Simplify right side
    2,691.38x = 3,777,385.99
  5. Step 5: Solve for x
    x = 3,777,385.99/2,691.38
  6. Step 6: Final answer
    x = 1,403.51

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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.