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Finding the Fourth Proportional to 8,516.80, 12,770.93 and 5,403.06

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Solution

The fourth proportional to 8,516.80, 12,770.93 and 5,403.06 is: 8,101.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,516.80 : 12,770.93 = 5,403.06 : x
  2. Step 2: Convert to fraction form
    8,516.80/12,770.93 = 5,403.06/x
  3. Step 3: Cross multiply
    8,516.80x = 12,770.93 × 5,403.06
  4. Step 4: Simplify right side
    8,516.80x = 69,002,101.05
  5. Step 5: Solve for x
    x = 69,002,101.05/8,516.80
  6. Step 6: Final answer
    x = 8,101.88

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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.