Home / 3,959.19-5,463.45-2,190.78

Finding the Fourth Proportional to 3,959.19, 5,463.45 and 2,190.78

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Solution

The fourth proportional to 3,959.19, 5,463.45 and 2,190.78 is: 3,023.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.19 : 5,463.45 = 2,190.78 : x
  2. Step 2: Convert to fraction form
    3,959.19/5,463.45 = 2,190.78/x
  3. Step 3: Cross multiply
    3,959.19x = 5,463.45 × 2,190.78
  4. Step 4: Simplify right side
    3,959.19x = 11,969,216.99
  5. Step 5: Solve for x
    x = 11,969,216.99/3,959.19
  6. Step 6: Final answer
    x = 3,023.15

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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.