Home / 3,712.25-5,122.74-2,220.99

Finding the Fourth Proportional to 3,712.25, 5,122.74 and 2,220.99

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Solution

The fourth proportional to 3,712.25, 5,122.74 and 2,220.99 is: 3,064.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.25 : 5,122.74 = 2,220.99 : x
  2. Step 2: Convert to fraction form
    3,712.25/5,122.74 = 2,220.99/x
  3. Step 3: Cross multiply
    3,712.25x = 5,122.74 × 2,220.99
  4. Step 4: Simplify right side
    3,712.25x = 11,377,545.98
  5. Step 5: Solve for x
    x = 11,377,545.98/3,712.25
  6. Step 6: Final answer
    x = 3,064.86

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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.