Home / 2,490.92-3,730.32-1,189.28

Finding the Fourth Proportional to 2,490.92, 3,730.32 and 1,189.28

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Solution

The fourth proportional to 2,490.92, 3,730.32 and 1,189.28 is: 1,781.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,490.92 : 3,730.32 = 1,189.28 : x
  2. Step 2: Convert to fraction form
    2,490.92/3,730.32 = 1,189.28/x
  3. Step 3: Cross multiply
    2,490.92x = 3,730.32 × 1,189.28
  4. Step 4: Simplify right side
    2,490.92x = 4,436,394.97
  5. Step 5: Solve for x
    x = 4,436,394.97/2,490.92
  6. Step 6: Final answer
    x = 1,781.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.