Home / 3,929.10-5,886.81-3,278.94

Finding the Fourth Proportional to 3,929.10, 5,886.81 and 3,278.94

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Solution

The fourth proportional to 3,929.10, 5,886.81 and 3,278.94 is: 4,912.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.10 : 5,886.81 = 3,278.94 : x
  2. Step 2: Convert to fraction form
    3,929.10/5,886.81 = 3,278.94/x
  3. Step 3: Cross multiply
    3,929.10x = 5,886.81 × 3,278.94
  4. Step 4: Simplify right side
    3,929.10x = 19,302,496.78
  5. Step 5: Solve for x
    x = 19,302,496.78/3,929.10
  6. Step 6: Final answer
    x = 4,912.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.