Home / 5,387.20-8,049.46-3,899.36

Finding the Fourth Proportional to 5,387.20, 8,049.46 and 3,899.36

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Solution

The fourth proportional to 5,387.20, 8,049.46 and 3,899.36 is: 5,826.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,387.20 : 8,049.46 = 3,899.36 : x
  2. Step 2: Convert to fraction form
    5,387.20/8,049.46 = 3,899.36/x
  3. Step 3: Cross multiply
    5,387.20x = 8,049.46 × 3,899.36
  4. Step 4: Simplify right side
    5,387.20x = 31,387,742.35
  5. Step 5: Solve for x
    x = 31,387,742.35/5,387.20
  6. Step 6: Final answer
    x = 5,826.36

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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.