Home / 4,687.20-6,466.96-3,900

Finding the Fourth Proportional to 4,687.20, 6,466.96 and 3,900

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Solution

The fourth proportional to 4,687.20, 6,466.96 and 3,900 is: 5,380.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,687.20 : 6,466.96 = 3,900 : x
  2. Step 2: Convert to fraction form
    4,687.20/6,466.96 = 3,900/x
  3. Step 3: Cross multiply
    4,687.20x = 6,466.96 × 3,900
  4. Step 4: Simplify right side
    4,687.20x = 25,221,144
  5. Step 5: Solve for x
    x = 25,221,144/4,687.20
  6. Step 6: Final answer
    x = 5,380.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.