Home / 2,691.18-4,036.10-1,908.90

Finding the Fourth Proportional to 2,691.18, 4,036.10 and 1,908.90

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Solution

The fourth proportional to 2,691.18, 4,036.10 and 1,908.90 is: 2,862.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.18 : 4,036.10 = 1,908.90 : x
  2. Step 2: Convert to fraction form
    2,691.18/4,036.10 = 1,908.90/x
  3. Step 3: Cross multiply
    2,691.18x = 4,036.10 × 1,908.90
  4. Step 4: Simplify right side
    2,691.18x = 7,704,501.75
  5. Step 5: Solve for x
    x = 7,704,501.75/2,691.18
  6. Step 6: Final answer
    x = 2,862.87

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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.