Home / 3,561.46-5,342.94-1,221.28

Finding the Fourth Proportional to 3,561.46, 5,342.94 and 1,221.28

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Solution

The fourth proportional to 3,561.46, 5,342.94 and 1,221.28 is: 1,832.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,561.46 : 5,342.94 = 1,221.28 : x
  2. Step 2: Convert to fraction form
    3,561.46/5,342.94 = 1,221.28/x
  3. Step 3: Cross multiply
    3,561.46x = 5,342.94 × 1,221.28
  4. Step 4: Simplify right side
    3,561.46x = 6,525,225.76
  5. Step 5: Solve for x
    x = 6,525,225.76/3,561.46
  6. Step 6: Final answer
    x = 1,832.18

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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.