Home / 3,937.78-5,436.75-3,039.90

Finding the Fourth Proportional to 3,937.78, 5,436.75 and 3,039.90

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Solution

The fourth proportional to 3,937.78, 5,436.75 and 3,039.90 is: 4,197.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,937.78 : 5,436.75 = 3,039.90 : x
  2. Step 2: Convert to fraction form
    3,937.78/5,436.75 = 3,039.90/x
  3. Step 3: Cross multiply
    3,937.78x = 5,436.75 × 3,039.90
  4. Step 4: Simplify right side
    3,937.78x = 16,527,176.33
  5. Step 5: Solve for x
    x = 16,527,176.33/3,937.78
  6. Step 6: Final answer
    x = 4,197.08

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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.