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Finding the Fourth Proportional to 8,780.80, 13,171.20 and 3,232.30

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Solution

The fourth proportional to 8,780.80, 13,171.20 and 3,232.30 is: 4,848.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.80 : 13,171.20 = 3,232.30 : x
  2. Step 2: Convert to fraction form
    8,780.80/13,171.20 = 3,232.30/x
  3. Step 3: Cross multiply
    8,780.80x = 13,171.20 × 3,232.30
  4. Step 4: Simplify right side
    8,780.80x = 42,573,269.76
  5. Step 5: Solve for x
    x = 42,573,269.76/8,780.80
  6. Step 6: Final answer
    x = 4,848.45

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1.5x scale

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.