Home / 3,184.31-4,396.17-2,121.79

Finding the Fourth Proportional to 3,184.31, 4,396.17 and 2,121.79

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Solution

The fourth proportional to 3,184.31, 4,396.17 and 2,121.79 is: 2,929.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,184.31 : 4,396.17 = 2,121.79 : x
  2. Step 2: Convert to fraction form
    3,184.31/4,396.17 = 2,121.79/x
  3. Step 3: Cross multiply
    3,184.31x = 4,396.17 × 2,121.79
  4. Step 4: Simplify right side
    3,184.31x = 9,327,749.54
  5. Step 5: Solve for x
    x = 9,327,749.54/3,184.31
  6. Step 6: Final answer
    x = 2,929.29

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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.