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Finding the Fourth Proportional to 8,613.56, 12,922.40 and 2,770.18

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Solution

The fourth proportional to 8,613.56, 12,922.40 and 2,770.18 is: 4,155.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,613.56 : 12,922.40 = 2,770.18 : x
  2. Step 2: Convert to fraction form
    8,613.56/12,922.40 = 2,770.18/x
  3. Step 3: Cross multiply
    8,613.56x = 12,922.40 × 2,770.18
  4. Step 4: Simplify right side
    8,613.56x = 35,797,348.65
  5. Step 5: Solve for x
    x = 35,797,348.65/8,613.56
  6. Step 6: Final answer
    x = 4,155.93

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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.