Home / 3,937.43-5,428.21-2,816.41

Finding the Fourth Proportional to 3,937.43, 5,428.21 and 2,816.41

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Solution

The fourth proportional to 3,937.43, 5,428.21 and 2,816.41 is: 3,882.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,937.43 : 5,428.21 = 2,816.41 : x
  2. Step 2: Convert to fraction form
    3,937.43/5,428.21 = 2,816.41/x
  3. Step 3: Cross multiply
    3,937.43x = 5,428.21 × 2,816.41
  4. Step 4: Simplify right side
    3,937.43x = 15,288,064.93
  5. Step 5: Solve for x
    x = 15,288,064.93/3,937.43
  6. Step 6: Final answer
    x = 3,882.75

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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.