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Finding the Fourth Proportional to 8,841.80, 13,262.70 and 8,409.80

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Solution

The fourth proportional to 8,841.80, 13,262.70 and 8,409.80 is: 12,614.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,841.80 : 13,262.70 = 8,409.80 : x
  2. Step 2: Convert to fraction form
    8,841.80/13,262.70 = 8,409.80/x
  3. Step 3: Cross multiply
    8,841.80x = 13,262.70 × 8,409.80
  4. Step 4: Simplify right side
    8,841.80x = 111,536,654.46
  5. Step 5: Solve for x
    x = 111,536,654.46/8,841.80
  6. Step 6: Final answer
    x = 12,614.70

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Similar ratio
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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.