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Finding the Fourth Proportional to 8,793.20, 13,189.79 and 2,637.20

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Solution

The fourth proportional to 8,793.20, 13,189.79 and 2,637.20 is: 3,955.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,793.20 : 13,189.79 = 2,637.20 : x
  2. Step 2: Convert to fraction form
    8,793.20/13,189.79 = 2,637.20/x
  3. Step 3: Cross multiply
    8,793.20x = 13,189.79 × 2,637.20
  4. Step 4: Simplify right side
    8,793.20x = 34,784,035.05
  5. Step 5: Solve for x
    x = 34,784,035.05/8,793.20
  6. Step 6: Final answer
    x = 3,955.79

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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.