Home / 7,160.20-9,879.78-4,175.50

Finding the Fourth Proportional to 7,160.20, 9,879.78 and 4,175.50

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Solution

The fourth proportional to 7,160.20, 9,879.78 and 4,175.50 is: 5,761.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,160.20 : 9,879.78 = 4,175.50 : x
  2. Step 2: Convert to fraction form
    7,160.20/9,879.78 = 4,175.50/x
  3. Step 3: Cross multiply
    7,160.20x = 9,879.78 × 4,175.50
  4. Step 4: Simplify right side
    7,160.20x = 41,253,021.39
  5. Step 5: Solve for x
    x = 41,253,021.39/7,160.20
  6. Step 6: Final answer
    x = 5,761.43

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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.