Home / 5,150.05-7,107.45-2,881.57

Finding the Fourth Proportional to 5,150.05, 7,107.45 and 2,881.57

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Solution

The fourth proportional to 5,150.05, 7,107.45 and 2,881.57 is: 3,976.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,150.05 : 7,107.45 = 2,881.57 : x
  2. Step 2: Convert to fraction form
    5,150.05/7,107.45 = 2,881.57/x
  3. Step 3: Cross multiply
    5,150.05x = 7,107.45 × 2,881.57
  4. Step 4: Simplify right side
    5,150.05x = 20,480,614.70
  5. Step 5: Solve for x
    x = 20,480,614.70/5,150.05
  6. Step 6: Final answer
    x = 3,976.78

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Half scale
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Double scale
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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.