Home / 2,790.68-3,851.13-1,531.73

Finding the Fourth Proportional to 2,790.68, 3,851.13 and 1,531.73

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Solution

The fourth proportional to 2,790.68, 3,851.13 and 1,531.73 is: 2,113.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.68 : 3,851.13 = 1,531.73 : x
  2. Step 2: Convert to fraction form
    2,790.68/3,851.13 = 1,531.73/x
  3. Step 3: Cross multiply
    2,790.68x = 3,851.13 × 1,531.73
  4. Step 4: Simplify right side
    2,790.68x = 5,898,891.35
  5. Step 5: Solve for x
    x = 5,898,891.35/2,790.68
  6. Step 6: Final answer
    x = 2,113.78

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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.