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Finding the Fourth Proportional to 8,394.55, 12,589.13 and 2,770.96

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Solution

The fourth proportional to 8,394.55, 12,589.13 and 2,770.96 is: 4,155.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,394.55 : 12,589.13 = 2,770.96 : x
  2. Step 2: Convert to fraction form
    8,394.55/12,589.13 = 2,770.96/x
  3. Step 3: Cross multiply
    8,394.55x = 12,589.13 × 2,770.96
  4. Step 4: Simplify right side
    8,394.55x = 34,883,975.66
  5. Step 5: Solve for x
    x = 34,883,975.66/8,394.55
  6. Step 6: Final answer
    x = 4,155.55

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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.