Home / 3,929.28-5,421.83-2,250.42

Finding the Fourth Proportional to 3,929.28, 5,421.83 and 2,250.42

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Solution

The fourth proportional to 3,929.28, 5,421.83 and 2,250.42 is: 3,105.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.28 : 5,421.83 = 2,250.42 : x
  2. Step 2: Convert to fraction form
    3,929.28/5,421.83 = 2,250.42/x
  3. Step 3: Cross multiply
    3,929.28x = 5,421.83 × 2,250.42
  4. Step 4: Simplify right side
    3,929.28x = 12,201,394.67
  5. Step 5: Solve for x
    x = 12,201,394.67/3,929.28
  6. Step 6: Final answer
    x = 3,105.25

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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.