Home / 3,937.17-5,433.28-2,168.78

Finding the Fourth Proportional to 3,937.17, 5,433.28 and 2,168.78

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Solution

The fourth proportional to 3,937.17, 5,433.28 and 2,168.78 is: 2,992.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,937.17 : 5,433.28 = 2,168.78 : x
  2. Step 2: Convert to fraction form
    3,937.17/5,433.28 = 2,168.78/x
  3. Step 3: Cross multiply
    3,937.17x = 5,433.28 × 2,168.78
  4. Step 4: Simplify right side
    3,937.17x = 11,783,556.41
  5. Step 5: Solve for x
    x = 11,783,556.41/3,937.17
  6. Step 6: Final answer
    x = 2,992.90

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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.