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Finding the Fourth Proportional to 8,782.32, 13,159.60 and 3,228

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Solution

The fourth proportional to 8,782.32, 13,159.60 and 3,228 is: 4,836.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,782.32 : 13,159.60 = 3,228 : x
  2. Step 2: Convert to fraction form
    8,782.32/13,159.60 = 3,228/x
  3. Step 3: Cross multiply
    8,782.32x = 13,159.60 × 3,228
  4. Step 4: Simplify right side
    8,782.32x = 42,479,188.80
  5. Step 5: Solve for x
    x = 42,479,188.80/8,782.32
  6. Step 6: Final answer
    x = 4,836.90

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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.