Home / 5,170.38-7,135.17-2,812.53

Finding the Fourth Proportional to 5,170.38, 7,135.17 and 2,812.53

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Solution

The fourth proportional to 5,170.38, 7,135.17 and 2,812.53 is: 3,881.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.38 : 7,135.17 = 2,812.53 : x
  2. Step 2: Convert to fraction form
    5,170.38/7,135.17 = 2,812.53/x
  3. Step 3: Cross multiply
    5,170.38x = 7,135.17 × 2,812.53
  4. Step 4: Simplify right side
    5,170.38x = 20,067,879.68
  5. Step 5: Solve for x
    x = 20,067,879.68/5,170.38
  6. Step 6: Final answer
    x = 3,881.32

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1.5x scale

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.