Home / 5,425.88-8,139.87-2,305.85

Finding the Fourth Proportional to 5,425.88, 8,139.87 and 2,305.85

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Solution

The fourth proportional to 5,425.88, 8,139.87 and 2,305.85 is: 3,459.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,425.88 : 8,139.87 = 2,305.85 : x
  2. Step 2: Convert to fraction form
    5,425.88/8,139.87 = 2,305.85/x
  3. Step 3: Cross multiply
    5,425.88x = 8,139.87 × 2,305.85
  4. Step 4: Simplify right side
    5,425.88x = 18,769,278.54
  5. Step 5: Solve for x
    x = 18,769,278.54/5,425.88
  6. Step 6: Final answer
    x = 3,459.22

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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.