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Finding the Fourth Proportional to 8,771.80, 12,084.60 and 6,114.52

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Solution

The fourth proportional to 8,771.80, 12,084.60 and 6,114.52 is: 8,423.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,771.80 : 12,084.60 = 6,114.52 : x
  2. Step 2: Convert to fraction form
    8,771.80/12,084.60 = 6,114.52/x
  3. Step 3: Cross multiply
    8,771.80x = 12,084.60 × 6,114.52
  4. Step 4: Simplify right side
    8,771.80x = 73,891,528.39
  5. Step 5: Solve for x
    x = 73,891,528.39/8,771.80
  6. Step 6: Final answer
    x = 8,423.76

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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.