Home / 5,387.30-7,434.11-3,149.80

Finding the Fourth Proportional to 5,387.30, 7,434.11 and 3,149.80

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Solution

The fourth proportional to 5,387.30, 7,434.11 and 3,149.80 is: 4,346.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,387.30 : 7,434.11 = 3,149.80 : x
  2. Step 2: Convert to fraction form
    5,387.30/7,434.11 = 3,149.80/x
  3. Step 3: Cross multiply
    5,387.30x = 7,434.11 × 3,149.80
  4. Step 4: Simplify right side
    5,387.30x = 23,415,959.68
  5. Step 5: Solve for x
    x = 23,415,959.68/5,387.30
  6. Step 6: Final answer
    x = 4,346.51

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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.