Home / 3,853.45-5,781.18-1,080.13

Finding the Fourth Proportional to 3,853.45, 5,781.18 and 1,080.13

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Solution

The fourth proportional to 3,853.45, 5,781.18 and 1,080.13 is: 1,620.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,853.45 : 5,781.18 = 1,080.13 : x
  2. Step 2: Convert to fraction form
    3,853.45/5,781.18 = 1,080.13/x
  3. Step 3: Cross multiply
    3,853.45x = 5,781.18 × 1,080.13
  4. Step 4: Simplify right side
    3,853.45x = 6,244,425.95
  5. Step 5: Solve for x
    x = 6,244,425.95/3,853.45
  6. Step 6: Final answer
    x = 1,620.48

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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.