Home / 5,110-7,660.92-2,645.20

Finding the Fourth Proportional to 5,110, 7,660.92 and 2,645.20

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Solution

The fourth proportional to 5,110, 7,660.92 and 2,645.20 is: 3,965.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,110 : 7,660.92 = 2,645.20 : x
  2. Step 2: Convert to fraction form
    5,110/7,660.92 = 2,645.20/x
  3. Step 3: Cross multiply
    5,110x = 7,660.92 × 2,645.20
  4. Step 4: Simplify right side
    5,110x = 20,264,665.58
  5. Step 5: Solve for x
    x = 20,264,665.58/5,110
  6. Step 6: Final answer
    x = 3,965.69

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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.