Home / 2,490.97-3,438.71-1,442.83

Finding the Fourth Proportional to 2,490.97, 3,438.71 and 1,442.83

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Solution

The fourth proportional to 2,490.97, 3,438.71 and 1,442.83 is: 1,991.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,490.97 : 3,438.71 = 1,442.83 : x
  2. Step 2: Convert to fraction form
    2,490.97/3,438.71 = 1,442.83/x
  3. Step 3: Cross multiply
    2,490.97x = 3,438.71 × 1,442.83
  4. Step 4: Simplify right side
    2,490.97x = 4,961,473.95
  5. Step 5: Solve for x
    x = 4,961,473.95/2,490.97
  6. Step 6: Final answer
    x = 1,991.78

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1.5x scale

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.