Home / 3,561.20-5,341.98-1,221.48

Finding the Fourth Proportional to 3,561.20, 5,341.98 and 1,221.48

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Solution

The fourth proportional to 3,561.20, 5,341.98 and 1,221.48 is: 1,832.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,561.20 : 5,341.98 = 1,221.48 : x
  2. Step 2: Convert to fraction form
    3,561.20/5,341.98 = 1,221.48/x
  3. Step 3: Cross multiply
    3,561.20x = 5,341.98 × 1,221.48
  4. Step 4: Simplify right side
    3,561.20x = 6,525,121.73
  5. Step 5: Solve for x
    x = 6,525,121.73/3,561.20
  6. Step 6: Final answer
    x = 1,832.28

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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.