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Finding the Fourth Proportional to 8,366.75, 12,556.20 and 6,742.90

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Solution

The fourth proportional to 8,366.75, 12,556.20 and 6,742.90 is: 10,119.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,366.75 : 12,556.20 = 6,742.90 : x
  2. Step 2: Convert to fraction form
    8,366.75/12,556.20 = 6,742.90/x
  3. Step 3: Cross multiply
    8,366.75x = 12,556.20 × 6,742.90
  4. Step 4: Simplify right side
    8,366.75x = 84,665,144.30
  5. Step 5: Solve for x
    x = 84,665,144.30/8,366.75
  6. Step 6: Final answer
    x = 10,119.25

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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.