Home / 5,182.30-7,764.90-2,987.20

Finding the Fourth Proportional to 5,182.30, 7,764.90 and 2,987.20

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Solution

The fourth proportional to 5,182.30, 7,764.90 and 2,987.20 is: 4,475.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,182.30 : 7,764.90 = 2,987.20 : x
  2. Step 2: Convert to fraction form
    5,182.30/7,764.90 = 2,987.20/x
  3. Step 3: Cross multiply
    5,182.30x = 7,764.90 × 2,987.20
  4. Step 4: Simplify right side
    5,182.30x = 23,195,309.28
  5. Step 5: Solve for x
    x = 23,195,309.28/5,182.30
  6. Step 6: Final answer
    x = 4,475.87

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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.