Home / 3,933.57-5,428.17-2,140.97

Finding the Fourth Proportional to 3,933.57, 5,428.17 and 2,140.97

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Solution

The fourth proportional to 3,933.57, 5,428.17 and 2,140.97 is: 2,954.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,933.57 : 5,428.17 = 2,140.97 : x
  2. Step 2: Convert to fraction form
    3,933.57/5,428.17 = 2,140.97/x
  3. Step 3: Cross multiply
    3,933.57x = 5,428.17 × 2,140.97
  4. Step 4: Simplify right side
    3,933.57x = 11,621,521.98
  5. Step 5: Solve for x
    x = 11,621,521.98/3,933.57
  6. Step 6: Final answer
    x = 2,954.45

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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.