Home / 5,083.65-7,015.66-3,143.78

Finding the Fourth Proportional to 5,083.65, 7,015.66 and 3,143.78

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Solution

The fourth proportional to 5,083.65, 7,015.66 and 3,143.78 is: 4,338.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,083.65 : 7,015.66 = 3,143.78 : x
  2. Step 2: Convert to fraction form
    5,083.65/7,015.66 = 3,143.78/x
  3. Step 3: Cross multiply
    5,083.65x = 7,015.66 × 3,143.78
  4. Step 4: Simplify right side
    5,083.65x = 22,055,691.59
  5. Step 5: Solve for x
    x = 22,055,691.59/5,083.65
  6. Step 6: Final answer
    x = 4,338.55

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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.