Home / 2,375.38-3,278.17-1,431.17

Finding the Fourth Proportional to 2,375.38, 3,278.17 and 1,431.17

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Solution

The fourth proportional to 2,375.38, 3,278.17 and 1,431.17 is: 1,975.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,375.38 : 3,278.17 = 1,431.17 : x
  2. Step 2: Convert to fraction form
    2,375.38/3,278.17 = 1,431.17/x
  3. Step 3: Cross multiply
    2,375.38x = 3,278.17 × 1,431.17
  4. Step 4: Simplify right side
    2,375.38x = 4,691,616.25
  5. Step 5: Solve for x
    x = 4,691,616.25/2,375.38
  6. Step 6: Final answer
    x = 1,975.10

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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.