Home / 2,490.35-3,735.52-1,187.87

Finding the Fourth Proportional to 2,490.35, 3,735.52 and 1,187.87

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Solution

The fourth proportional to 2,490.35, 3,735.52 and 1,187.87 is: 1,781.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,490.35 : 3,735.52 = 1,187.87 : x
  2. Step 2: Convert to fraction form
    2,490.35/3,735.52 = 1,187.87/x
  3. Step 3: Cross multiply
    2,490.35x = 3,735.52 × 1,187.87
  4. Step 4: Simplify right side
    2,490.35x = 4,437,290.50
  5. Step 5: Solve for x
    x = 4,437,290.50/2,490.35
  6. Step 6: Final answer
    x = 1,781.80

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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.