Home / 7,685.27-11,520.69-4,170.12

Finding the Fourth Proportional to 7,685.27, 11,520.69 and 4,170.12

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Solution

The fourth proportional to 7,685.27, 11,520.69 and 4,170.12 is: 6,251.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,685.27 : 11,520.69 = 4,170.12 : x
  2. Step 2: Convert to fraction form
    7,685.27/11,520.69 = 4,170.12/x
  3. Step 3: Cross multiply
    7,685.27x = 11,520.69 × 4,170.12
  4. Step 4: Simplify right side
    7,685.27x = 48,042,659.78
  5. Step 5: Solve for x
    x = 48,042,659.78/7,685.27
  6. Step 6: Final answer
    x = 6,251.27

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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.