Home / 5,086.40-7,631.96-2,312.55

Finding the Fourth Proportional to 5,086.40, 7,631.96 and 2,312.55

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Solution

The fourth proportional to 5,086.40, 7,631.96 and 2,312.55 is: 3,469.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,086.40 : 7,631.96 = 2,312.55 : x
  2. Step 2: Convert to fraction form
    5,086.40/7,631.96 = 2,312.55/x
  3. Step 3: Cross multiply
    5,086.40x = 7,631.96 × 2,312.55
  4. Step 4: Simplify right side
    5,086.40x = 17,649,277.54
  5. Step 5: Solve for x
    x = 17,649,277.54/5,086.40
  6. Step 6: Final answer
    x = 3,469.90

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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.