Home / 2,989.44-4,122.24-1,747.20

Finding the Fourth Proportional to 2,989.44, 4,122.24 and 1,747.20

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Solution

The fourth proportional to 2,989.44, 4,122.24 and 1,747.20 is: 2,409.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.44 : 4,122.24 = 1,747.20 : x
  2. Step 2: Convert to fraction form
    2,989.44/4,122.24 = 1,747.20/x
  3. Step 3: Cross multiply
    2,989.44x = 4,122.24 × 1,747.20
  4. Step 4: Simplify right side
    2,989.44x = 7,202,377.73
  5. Step 5: Solve for x
    x = 7,202,377.73/2,989.44
  6. Step 6: Final answer
    x = 2,409.27

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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.