Home / 3,212.67-4,819.49-991.04

Finding the Fourth Proportional to 3,212.67, 4,819.49 and 991.04

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Solution

The fourth proportional to 3,212.67, 4,819.49 and 991.04 is: 1,486.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212.67 : 4,819.49 = 991.04 : x
  2. Step 2: Convert to fraction form
    3,212.67/4,819.49 = 991.04/x
  3. Step 3: Cross multiply
    3,212.67x = 4,819.49 × 991.04
  4. Step 4: Simplify right side
    3,212.67x = 4,776,278.32
  5. Step 5: Solve for x
    x = 4,776,278.32/3,212.67
  6. Step 6: Final answer
    x = 1,486.70

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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.