Home / 3,712.82-5,123.68-2,140.90

Finding the Fourth Proportional to 3,712.82, 5,123.68 and 2,140.90

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Solution

The fourth proportional to 3,712.82, 5,123.68 and 2,140.90 is: 2,954.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.82 : 5,123.68 = 2,140.90 : x
  2. Step 2: Convert to fraction form
    3,712.82/5,123.68 = 2,140.90/x
  3. Step 3: Cross multiply
    3,712.82x = 5,123.68 × 2,140.90
  4. Step 4: Simplify right side
    3,712.82x = 10,969,286.51
  5. Step 5: Solve for x
    x = 10,969,286.51/3,712.82
  6. Step 6: Final answer
    x = 2,954.44

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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.