Home / 2,490.79-3,436.45-1,442.11

Finding the Fourth Proportional to 2,490.79, 3,436.45 and 1,442.11

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Solution

The fourth proportional to 2,490.79, 3,436.45 and 1,442.11 is: 1,989.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,490.79 : 3,436.45 = 1,442.11 : x
  2. Step 2: Convert to fraction form
    2,490.79/3,436.45 = 1,442.11/x
  3. Step 3: Cross multiply
    2,490.79x = 3,436.45 × 1,442.11
  4. Step 4: Simplify right side
    2,490.79x = 4,955,738.91
  5. Step 5: Solve for x
    x = 4,955,738.91/2,490.79
  6. Step 6: Final answer
    x = 1,989.63

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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.