Home / 2,489.77-3,435.20-1,545.11

Finding the Fourth Proportional to 2,489.77, 3,435.20 and 1,545.11

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Solution

The fourth proportional to 2,489.77, 3,435.20 and 1,545.11 is: 2,131.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.77 : 3,435.20 = 1,545.11 : x
  2. Step 2: Convert to fraction form
    2,489.77/3,435.20 = 1,545.11/x
  3. Step 3: Cross multiply
    2,489.77x = 3,435.20 × 1,545.11
  4. Step 4: Simplify right side
    2,489.77x = 5,307,761.87
  5. Step 5: Solve for x
    x = 5,307,761.87/2,489.77
  6. Step 6: Final answer
    x = 2,131.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.