Home / 3,187.28-4,790.68-2,642.96

Finding the Fourth Proportional to 3,187.28, 4,790.68 and 2,642.96

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Solution

The fourth proportional to 3,187.28, 4,790.68 and 2,642.96 is: 3,972.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.28 : 4,790.68 = 2,642.96 : x
  2. Step 2: Convert to fraction form
    3,187.28/4,790.68 = 2,642.96/x
  3. Step 3: Cross multiply
    3,187.28x = 4,790.68 × 2,642.96
  4. Step 4: Simplify right side
    3,187.28x = 12,661,575.61
  5. Step 5: Solve for x
    x = 12,661,575.61/3,187.28
  6. Step 6: Final answer
    x = 3,972.53

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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.