Home / 7,481.20-10,320.24-5,125.60

Finding the Fourth Proportional to 7,481.20, 10,320.24 and 5,125.60

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Solution

The fourth proportional to 7,481.20, 10,320.24 and 5,125.60 is: 7,070.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,481.20 : 10,320.24 = 5,125.60 : x
  2. Step 2: Convert to fraction form
    7,481.20/10,320.24 = 5,125.60/x
  3. Step 3: Cross multiply
    7,481.20x = 10,320.24 × 5,125.60
  4. Step 4: Simplify right side
    7,481.20x = 52,897,422.14
  5. Step 5: Solve for x
    x = 52,897,422.14/7,481.20
  6. Step 6: Final answer
    x = 7,070.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.