Home / 8,821.28-13,219.68-3,883.52

Finding the Fourth Proportional to 8,821.28, 13,219.68 and 3,883.52

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Solution

The fourth proportional to 8,821.28, 13,219.68 and 3,883.52 is: 5,819.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,821.28 : 13,219.68 = 3,883.52 : x
  2. Step 2: Convert to fraction form
    8,821.28/13,219.68 = 3,883.52/x
  3. Step 3: Cross multiply
    8,821.28x = 13,219.68 × 3,883.52
  4. Step 4: Simplify right side
    8,821.28x = 51,338,891.67
  5. Step 5: Solve for x
    x = 51,338,891.67/8,821.28
  6. Step 6: Final answer
    x = 5,819.89

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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.