Home / 3,948.25-5,922.40-1,639.75

Finding the Fourth Proportional to 3,948.25, 5,922.40 and 1,639.75

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Solution

The fourth proportional to 3,948.25, 5,922.40 and 1,639.75 is: 2,459.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,948.25 : 5,922.40 = 1,639.75 : x
  2. Step 2: Convert to fraction form
    3,948.25/5,922.40 = 1,639.75/x
  3. Step 3: Cross multiply
    3,948.25x = 5,922.40 × 1,639.75
  4. Step 4: Simplify right side
    3,948.25x = 9,711,251.30
  5. Step 5: Solve for x
    x = 9,711,251.30/3,948.25
  6. Step 6: Final answer
    x = 2,459.63

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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.