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Finding the Fourth Proportional to 8,375.76, 12,556.20 and 7,151.04

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Solution

The fourth proportional to 8,375.76, 12,556.20 and 7,151.04 is: 10,720.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,375.76 : 12,556.20 = 7,151.04 : x
  2. Step 2: Convert to fraction form
    8,375.76/12,556.20 = 7,151.04/x
  3. Step 3: Cross multiply
    8,375.76x = 12,556.20 × 7,151.04
  4. Step 4: Simplify right side
    8,375.76x = 89,789,888.45
  5. Step 5: Solve for x
    x = 89,789,888.45/8,375.76
  6. Step 6: Final answer
    x = 10,720.21

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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.