Home / 3,972.45-5,481.39-2,378.73

Finding the Fourth Proportional to 3,972.45, 5,481.39 and 2,378.73

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Solution

The fourth proportional to 3,972.45, 5,481.39 and 2,378.73 is: 3,282.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.45 : 5,481.39 = 2,378.73 : x
  2. Step 2: Convert to fraction form
    3,972.45/5,481.39 = 2,378.73/x
  3. Step 3: Cross multiply
    3,972.45x = 5,481.39 × 2,378.73
  4. Step 4: Simplify right side
    3,972.45x = 13,038,746.83
  5. Step 5: Solve for x
    x = 13,038,746.83/3,972.45
  6. Step 6: Final answer
    x = 3,282.29

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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.