Home / 7,672.20-11,520.45-5,217.90

Finding the Fourth Proportional to 7,672.20, 11,520.45 and 5,217.90

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Solution

The fourth proportional to 7,672.20, 11,520.45 and 5,217.90 is: 7,835.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,672.20 : 11,520.45 = 5,217.90 : x
  2. Step 2: Convert to fraction form
    7,672.20/11,520.45 = 5,217.90/x
  3. Step 3: Cross multiply
    7,672.20x = 11,520.45 × 5,217.90
  4. Step 4: Simplify right side
    7,672.20x = 60,112,556.06
  5. Step 5: Solve for x
    x = 60,112,556.06/7,672.20
  6. Step 6: Final answer
    x = 7,835.11

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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.