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Finding the Fourth Proportional to 8,770.62, 12,103.50 and 4,791.80

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Solution

The fourth proportional to 8,770.62, 12,103.50 and 4,791.80 is: 6,612.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,770.62 : 12,103.50 = 4,791.80 : x
  2. Step 2: Convert to fraction form
    8,770.62/12,103.50 = 4,791.80/x
  3. Step 3: Cross multiply
    8,770.62x = 12,103.50 × 4,791.80
  4. Step 4: Simplify right side
    8,770.62x = 57,997,581.56
  5. Step 5: Solve for x
    x = 57,997,581.56/8,770.62
  6. Step 6: Final answer
    x = 6,612.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.