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Finding the Fourth Proportional to 8,372.66, 12,561.28 and 6,808.80

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Solution

The fourth proportional to 8,372.66, 12,561.28 and 6,808.80 is: 10,215.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,372.66 : 12,561.28 = 6,808.80 : x
  2. Step 2: Convert to fraction form
    8,372.66/12,561.28 = 6,808.80/x
  3. Step 3: Cross multiply
    8,372.66x = 12,561.28 × 6,808.80
  4. Step 4: Simplify right side
    8,372.66x = 85,527,243.26
  5. Step 5: Solve for x
    x = 85,527,243.26/8,372.66
  6. Step 6: Final answer
    x = 10,215.06

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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.