Home / 1,487.91-2,230.25-999.75

Finding the Fourth Proportional to 1,487.91, 2,230.25 and 999.75

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Solution

The fourth proportional to 1,487.91, 2,230.25 and 999.75 is: 1,498.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.91 : 2,230.25 = 999.75 : x
  2. Step 2: Convert to fraction form
    1,487.91/2,230.25 = 999.75/x
  3. Step 3: Cross multiply
    1,487.91x = 2,230.25 × 999.75
  4. Step 4: Simplify right side
    1,487.91x = 2,229,687.44
  5. Step 5: Solve for x
    x = 2,229,687.44/1,487.91
  6. Step 6: Final answer
    x = 1,498.54

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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.