Home / 1,839.64-2,538.20-1,279.48

Finding the Fourth Proportional to 1,839.64, 2,538.20 and 1,279.48

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Solution

The fourth proportional to 1,839.64, 2,538.20 and 1,279.48 is: 1,765.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,839.64 : 2,538.20 = 1,279.48 : x
  2. Step 2: Convert to fraction form
    1,839.64/2,538.20 = 1,279.48/x
  3. Step 3: Cross multiply
    1,839.64x = 2,538.20 × 1,279.48
  4. Step 4: Simplify right side
    1,839.64x = 3,247,576.14
  5. Step 5: Solve for x
    x = 3,247,576.14/1,839.64
  6. Step 6: Final answer
    x = 1,765.33

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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.