Home / 5,180.50-7,149.12-2,822.80

Finding the Fourth Proportional to 5,180.50, 7,149.12 and 2,822.80

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Solution

The fourth proportional to 5,180.50, 7,149.12 and 2,822.80 is: 3,895.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180.50 : 7,149.12 = 2,822.80 : x
  2. Step 2: Convert to fraction form
    5,180.50/7,149.12 = 2,822.80/x
  3. Step 3: Cross multiply
    5,180.50x = 7,149.12 × 2,822.80
  4. Step 4: Simplify right side
    5,180.50x = 20,180,535.94
  5. Step 5: Solve for x
    x = 20,180,535.94/5,180.50
  6. Step 6: Final answer
    x = 3,895.48

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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.