Home / 3,894.12-5,841.36-1,121.22

Finding the Fourth Proportional to 3,894.12, 5,841.36 and 1,121.22

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Solution

The fourth proportional to 3,894.12, 5,841.36 and 1,121.22 is: 1,681.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894.12 : 5,841.36 = 1,121.22 : x
  2. Step 2: Convert to fraction form
    3,894.12/5,841.36 = 1,121.22/x
  3. Step 3: Cross multiply
    3,894.12x = 5,841.36 × 1,121.22
  4. Step 4: Simplify right side
    3,894.12x = 6,549,449.66
  5. Step 5: Solve for x
    x = 6,549,449.66/3,894.12
  6. Step 6: Final answer
    x = 1,681.88

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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.