Home / 5,149.07-7,105.79-2,910.80

Finding the Fourth Proportional to 5,149.07, 7,105.79 and 2,910.80

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Solution

The fourth proportional to 5,149.07, 7,105.79 and 2,910.80 is: 4,016.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.07 : 7,105.79 = 2,910.80 : x
  2. Step 2: Convert to fraction form
    5,149.07/7,105.79 = 2,910.80/x
  3. Step 3: Cross multiply
    5,149.07x = 7,105.79 × 2,910.80
  4. Step 4: Simplify right side
    5,149.07x = 20,683,558.57
  5. Step 5: Solve for x
    x = 20,683,558.57/5,149.07
  6. Step 6: Final answer
    x = 4,016.95

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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.