Home / 3,561.31-5,342.97-1,221.62

Finding the Fourth Proportional to 3,561.31, 5,342.97 and 1,221.62

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Solution

The fourth proportional to 3,561.31, 5,342.97 and 1,221.62 is: 1,832.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,561.31 : 5,342.97 = 1,221.62 : x
  2. Step 2: Convert to fraction form
    3,561.31/5,342.97 = 1,221.62/x
  3. Step 3: Cross multiply
    3,561.31x = 5,342.97 × 1,221.62
  4. Step 4: Simplify right side
    3,561.31x = 6,527,079.01
  5. Step 5: Solve for x
    x = 6,527,079.01/3,561.31
  6. Step 6: Final answer
    x = 1,832.77

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1.5x scale

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.