Home / 2,861.31-4,284.17-2,165.88

Finding the Fourth Proportional to 2,861.31, 4,284.17 and 2,165.88

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Solution

The fourth proportional to 2,861.31, 4,284.17 and 2,165.88 is: 3,242.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.31 : 4,284.17 = 2,165.88 : x
  2. Step 2: Convert to fraction form
    2,861.31/4,284.17 = 2,165.88/x
  3. Step 3: Cross multiply
    2,861.31x = 4,284.17 × 2,165.88
  4. Step 4: Simplify right side
    2,861.31x = 9,278,998.12
  5. Step 5: Solve for x
    x = 9,278,998.12/2,861.31
  6. Step 6: Final answer
    x = 3,242.92

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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.