Home / 3,972.09-5,481.09-2,378.43

Finding the Fourth Proportional to 3,972.09, 5,481.09 and 2,378.43

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Solution

The fourth proportional to 3,972.09, 5,481.09 and 2,378.43 is: 3,282.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.09 : 5,481.09 = 2,378.43 : x
  2. Step 2: Convert to fraction form
    3,972.09/5,481.09 = 2,378.43/x
  3. Step 3: Cross multiply
    3,972.09x = 5,481.09 × 2,378.43
  4. Step 4: Simplify right side
    3,972.09x = 13,036,388.89
  5. Step 5: Solve for x
    x = 13,036,388.89/3,972.09
  6. Step 6: Final answer
    x = 3,282.00

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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.