Home / 4,161.33-6,239.91-1,387.05

Finding the Fourth Proportional to 4,161.33, 6,239.91 and 1,387.05

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Solution

The fourth proportional to 4,161.33, 6,239.91 and 1,387.05 is: 2,079.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,161.33 : 6,239.91 = 1,387.05 : x
  2. Step 2: Convert to fraction form
    4,161.33/6,239.91 = 1,387.05/x
  3. Step 3: Cross multiply
    4,161.33x = 6,239.91 × 1,387.05
  4. Step 4: Simplify right side
    4,161.33x = 8,655,067.17
  5. Step 5: Solve for x
    x = 8,655,067.17/4,161.33
  6. Step 6: Final answer
    x = 2,079.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.