Home / 2,375.90-3,279.66-2,126.78

Finding the Fourth Proportional to 2,375.90, 3,279.66 and 2,126.78

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Solution

The fourth proportional to 2,375.90, 3,279.66 and 2,126.78 is: 2,935.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,375.90 : 3,279.66 = 2,126.78 : x
  2. Step 2: Convert to fraction form
    2,375.90/3,279.66 = 2,126.78/x
  3. Step 3: Cross multiply
    2,375.90x = 3,279.66 × 2,126.78
  4. Step 4: Simplify right side
    2,375.90x = 6,975,123.49
  5. Step 5: Solve for x
    x = 6,975,123.49/2,375.90
  6. Step 6: Final answer
    x = 2,935.78

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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.