Home / 3,060.80-4,591.20-1,112.78

Finding the Fourth Proportional to 3,060.80, 4,591.20 and 1,112.78

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Solution

The fourth proportional to 3,060.80, 4,591.20 and 1,112.78 is: 1,669.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,060.80 : 4,591.20 = 1,112.78 : x
  2. Step 2: Convert to fraction form
    3,060.80/4,591.20 = 1,112.78/x
  3. Step 3: Cross multiply
    3,060.80x = 4,591.20 × 1,112.78
  4. Step 4: Simplify right side
    3,060.80x = 5,108,995.54
  5. Step 5: Solve for x
    x = 5,108,995.54/3,060.80
  6. Step 6: Final answer
    x = 1,669.17

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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.