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Finding the Fourth Proportional to 8,780.99, 13,176.68 and 3,238.21

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Solution

The fourth proportional to 8,780.99, 13,176.68 and 3,238.21 is: 4,859.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.99 : 13,176.68 = 3,238.21 : x
  2. Step 2: Convert to fraction form
    8,780.99/13,176.68 = 3,238.21/x
  3. Step 3: Cross multiply
    8,780.99x = 13,176.68 × 3,238.21
  4. Step 4: Simplify right side
    8,780.99x = 42,668,856.94
  5. Step 5: Solve for x
    x = 42,668,856.94/8,780.99
  6. Step 6: Final answer
    x = 4,859.23

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.