Home / 4,987.85-7,472.19-2,789.91

Finding the Fourth Proportional to 4,987.85, 7,472.19 and 2,789.91

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Solution

The fourth proportional to 4,987.85, 7,472.19 and 2,789.91 is: 4,179.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.85 : 7,472.19 = 2,789.91 : x
  2. Step 2: Convert to fraction form
    4,987.85/7,472.19 = 2,789.91/x
  3. Step 3: Cross multiply
    4,987.85x = 7,472.19 × 2,789.91
  4. Step 4: Simplify right side
    4,987.85x = 20,846,737.60
  5. Step 5: Solve for x
    x = 20,846,737.60/4,987.85
  6. Step 6: Final answer
    x = 4,179.51

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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.