Home / 5,180.91-7,149.67-2,881.22

Finding the Fourth Proportional to 5,180.91, 7,149.67 and 2,881.22

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Solution

The fourth proportional to 5,180.91, 7,149.67 and 2,881.22 is: 3,976.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180.91 : 7,149.67 = 2,881.22 : x
  2. Step 2: Convert to fraction form
    5,180.91/7,149.67 = 2,881.22/x
  3. Step 3: Cross multiply
    5,180.91x = 7,149.67 × 2,881.22
  4. Step 4: Simplify right side
    5,180.91x = 20,599,769.46
  5. Step 5: Solve for x
    x = 20,599,769.46/5,180.91
  6. Step 6: Final answer
    x = 3,976.09

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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.