Home / 5,110.72-7,680.66-2,515.48

Finding the Fourth Proportional to 5,110.72, 7,680.66 and 2,515.48

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Solution

The fourth proportional to 5,110.72, 7,680.66 and 2,515.48 is: 3,780.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,110.72 : 7,680.66 = 2,515.48 : x
  2. Step 2: Convert to fraction form
    5,110.72/7,680.66 = 2,515.48/x
  3. Step 3: Cross multiply
    5,110.72x = 7,680.66 × 2,515.48
  4. Step 4: Simplify right side
    5,110.72x = 19,320,546.62
  5. Step 5: Solve for x
    x = 19,320,546.62/5,110.72
  6. Step 6: Final answer
    x = 3,780.40

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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.