Home / 2,490.39-3,735.57-1,187.91

Finding the Fourth Proportional to 2,490.39, 3,735.57 and 1,187.91

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Solution

The fourth proportional to 2,490.39, 3,735.57 and 1,187.91 is: 1,781.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,490.39 : 3,735.57 = 1,187.91 : x
  2. Step 2: Convert to fraction form
    2,490.39/3,735.57 = 1,187.91/x
  3. Step 3: Cross multiply
    2,490.39x = 3,735.57 × 1,187.91
  4. Step 4: Simplify right side
    2,490.39x = 4,437,520.96
  5. Step 5: Solve for x
    x = 4,437,520.96/2,490.39
  6. Step 6: Final answer
    x = 1,781.86

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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.