Home / 1,439.22-2,158.86-574.14

Finding the Fourth Proportional to 1,439.22, 2,158.86 and 574.14

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Solution

The fourth proportional to 1,439.22, 2,158.86 and 574.14 is: 861.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.22 : 2,158.86 = 574.14 : x
  2. Step 2: Convert to fraction form
    1,439.22/2,158.86 = 574.14/x
  3. Step 3: Cross multiply
    1,439.22x = 2,158.86 × 574.14
  4. Step 4: Simplify right side
    1,439.22x = 1,239,487.88
  5. Step 5: Solve for x
    x = 1,239,487.88/1,439.22
  6. Step 6: Final answer
    x = 861.22

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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.