Home / 1,249.38-1,867.28-1,150.88

Finding the Fourth Proportional to 1,249.38, 1,867.28 and 1,150.88

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Solution

The fourth proportional to 1,249.38, 1,867.28 and 1,150.88 is: 1,720.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249.38 : 1,867.28 = 1,150.88 : x
  2. Step 2: Convert to fraction form
    1,249.38/1,867.28 = 1,150.88/x
  3. Step 3: Cross multiply
    1,249.38x = 1,867.28 × 1,150.88
  4. Step 4: Simplify right side
    1,249.38x = 2,149,000.12
  5. Step 5: Solve for x
    x = 2,149,000.12/1,249.38
  6. Step 6: Final answer
    x = 1,720.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.