Home / 2,489.90-3,730.35-1,449.05

Finding the Fourth Proportional to 2,489.90, 3,730.35 and 1,449.05

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Solution

The fourth proportional to 2,489.90, 3,730.35 and 1,449.05 is: 2,170.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.90 : 3,730.35 = 1,449.05 : x
  2. Step 2: Convert to fraction form
    2,489.90/3,730.35 = 1,449.05/x
  3. Step 3: Cross multiply
    2,489.90x = 3,730.35 × 1,449.05
  4. Step 4: Simplify right side
    2,489.90x = 5,405,463.67
  5. Step 5: Solve for x
    x = 5,405,463.67/2,489.90
  6. Step 6: Final answer
    x = 2,170.96

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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.