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Finding the Fourth Proportional to 8,528.79, 12,793.19 and 4,142.49

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Solution

The fourth proportional to 8,528.79, 12,793.19 and 4,142.49 is: 6,213.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,528.79 : 12,793.19 = 4,142.49 : x
  2. Step 2: Convert to fraction form
    8,528.79/12,793.19 = 4,142.49/x
  3. Step 3: Cross multiply
    8,528.79x = 12,793.19 × 4,142.49
  4. Step 4: Simplify right side
    8,528.79x = 52,995,661.64
  5. Step 5: Solve for x
    x = 52,995,661.64/8,528.79
  6. Step 6: Final answer
    x = 6,213.74

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Similar ratio
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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.