Home / 2,379.38-3,283.54-1,331.78

Finding the Fourth Proportional to 2,379.38, 3,283.54 and 1,331.78

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Solution

The fourth proportional to 2,379.38, 3,283.54 and 1,331.78 is: 1,837.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,379.38 : 3,283.54 = 1,331.78 : x
  2. Step 2: Convert to fraction form
    2,379.38/3,283.54 = 1,331.78/x
  3. Step 3: Cross multiply
    2,379.38x = 3,283.54 × 1,331.78
  4. Step 4: Simplify right side
    2,379.38x = 4,372,933.15
  5. Step 5: Solve for x
    x = 4,372,933.15/2,379.38
  6. Step 6: Final answer
    x = 1,837.85

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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.