Home / 2,987.50-4,481.25-1,422.76

Finding the Fourth Proportional to 2,987.50, 4,481.25 and 1,422.76

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Solution

The fourth proportional to 2,987.50, 4,481.25 and 1,422.76 is: 2,134.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.50 : 4,481.25 = 1,422.76 : x
  2. Step 2: Convert to fraction form
    2,987.50/4,481.25 = 1,422.76/x
  3. Step 3: Cross multiply
    2,987.50x = 4,481.25 × 1,422.76
  4. Step 4: Simplify right side
    2,987.50x = 6,375,742.19
  5. Step 5: Solve for x
    x = 6,375,742.19/2,987.50
  6. Step 6: Final answer
    x = 2,134.14

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Similar ratio
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1.5x scale

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.