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Finding the Fourth Proportional to 8,549.76, 12,824.64 and 3,932.80

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Solution

The fourth proportional to 8,549.76, 12,824.64 and 3,932.80 is: 5,899.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,549.76 : 12,824.64 = 3,932.80 : x
  2. Step 2: Convert to fraction form
    8,549.76/12,824.64 = 3,932.80/x
  3. Step 3: Cross multiply
    8,549.76x = 12,824.64 × 3,932.80
  4. Step 4: Simplify right side
    8,549.76x = 50,436,744.19
  5. Step 5: Solve for x
    x = 50,436,744.19/8,549.76
  6. Step 6: Final answer
    x = 5,899.20

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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.