Home / 3,445.12-5,167.80-2,213.20

Finding the Fourth Proportional to 3,445.12, 5,167.80 and 2,213.20

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Solution

The fourth proportional to 3,445.12, 5,167.80 and 2,213.20 is: 3,319.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,445.12 : 5,167.80 = 2,213.20 : x
  2. Step 2: Convert to fraction form
    3,445.12/5,167.80 = 2,213.20/x
  3. Step 3: Cross multiply
    3,445.12x = 5,167.80 × 2,213.20
  4. Step 4: Simplify right side
    3,445.12x = 11,437,374.96
  5. Step 5: Solve for x
    x = 11,437,374.96/3,445.12
  6. Step 6: Final answer
    x = 3,319.88

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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.