Home / 4,122.66-5,687.29-2,705.78

Finding the Fourth Proportional to 4,122.66, 5,687.29 and 2,705.78

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Solution

The fourth proportional to 4,122.66, 5,687.29 and 2,705.78 is: 3,732.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,122.66 : 5,687.29 = 2,705.78 : x
  2. Step 2: Convert to fraction form
    4,122.66/5,687.29 = 2,705.78/x
  3. Step 3: Cross multiply
    4,122.66x = 5,687.29 × 2,705.78
  4. Step 4: Simplify right side
    4,122.66x = 15,388,555.54
  5. Step 5: Solve for x
    x = 15,388,555.54/4,122.66
  6. Step 6: Final answer
    x = 3,732.68

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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.