Home / 2,490.86-3,437.24-1,442.90

Finding the Fourth Proportional to 2,490.86, 3,437.24 and 1,442.90

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Solution

The fourth proportional to 2,490.86, 3,437.24 and 1,442.90 is: 1,991.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,490.86 : 3,437.24 = 1,442.90 : x
  2. Step 2: Convert to fraction form
    2,490.86/3,437.24 = 1,442.90/x
  3. Step 3: Cross multiply
    2,490.86x = 3,437.24 × 1,442.90
  4. Step 4: Simplify right side
    2,490.86x = 4,959,593.60
  5. Step 5: Solve for x
    x = 4,959,593.60/2,490.86
  6. Step 6: Final answer
    x = 1,991.12

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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.