Home / 5,112.90-7,672.17-2,515.86

Finding the Fourth Proportional to 5,112.90, 7,672.17 and 2,515.86

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Solution

The fourth proportional to 5,112.90, 7,672.17 and 2,515.86 is: 3,775.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.90 : 7,672.17 = 2,515.86 : x
  2. Step 2: Convert to fraction form
    5,112.90/7,672.17 = 2,515.86/x
  3. Step 3: Cross multiply
    5,112.90x = 7,672.17 × 2,515.86
  4. Step 4: Simplify right side
    5,112.90x = 19,302,105.62
  5. Step 5: Solve for x
    x = 19,302,105.62/5,112.90
  6. Step 6: Final answer
    x = 3,775.18

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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.