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Finding the Fourth Proportional to 7,081.70, 10,627.92 and 5,711.52

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Solution

The fourth proportional to 7,081.70, 10,627.92 and 5,711.52 is: 8,571.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,081.70 : 10,627.92 = 5,711.52 : x
  2. Step 2: Convert to fraction form
    7,081.70/10,627.92 = 5,711.52/x
  3. Step 3: Cross multiply
    7,081.70x = 10,627.92 × 5,711.52
  4. Step 4: Simplify right side
    7,081.70x = 60,701,577.64
  5. Step 5: Solve for x
    x = 60,701,577.64/7,081.70
  6. Step 6: Final answer
    x = 8,571.61

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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.