Home / 3,959.38-5,463.55-2,190.80

Finding the Fourth Proportional to 3,959.38, 5,463.55 and 2,190.80

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Solution

The fourth proportional to 3,959.38, 5,463.55 and 2,190.80 is: 3,023.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.38 : 5,463.55 = 2,190.80 : x
  2. Step 2: Convert to fraction form
    3,959.38/5,463.55 = 2,190.80/x
  3. Step 3: Cross multiply
    3,959.38x = 5,463.55 × 2,190.80
  4. Step 4: Simplify right side
    3,959.38x = 11,969,531.00
  5. Step 5: Solve for x
    x = 11,969,531.00/3,959.38
  6. Step 6: Final answer
    x = 3,023.08

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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.