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Finding the Fourth Proportional to 8,549.68, 12,816.60 and 4,380.51

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Solution

The fourth proportional to 8,549.68, 12,816.60 and 4,380.51 is: 6,566.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,549.68 : 12,816.60 = 4,380.51 : x
  2. Step 2: Convert to fraction form
    8,549.68/12,816.60 = 4,380.51/x
  3. Step 3: Cross multiply
    8,549.68x = 12,816.60 × 4,380.51
  4. Step 4: Simplify right side
    8,549.68x = 56,143,244.47
  5. Step 5: Solve for x
    x = 56,143,244.47/8,549.68
  6. Step 6: Final answer
    x = 6,566.71

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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.