Home / 3,839.57-5,298.80-2,161.25

Finding the Fourth Proportional to 3,839.57, 5,298.80 and 2,161.25

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Solution

The fourth proportional to 3,839.57, 5,298.80 and 2,161.25 is: 2,982.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,839.57 : 5,298.80 = 2,161.25 : x
  2. Step 2: Convert to fraction form
    3,839.57/5,298.80 = 2,161.25/x
  3. Step 3: Cross multiply
    3,839.57x = 5,298.80 × 2,161.25
  4. Step 4: Simplify right side
    3,839.57x = 11,451,994.20
  5. Step 5: Solve for x
    x = 11,451,994.20/3,839.57
  6. Step 6: Final answer
    x = 2,982.63

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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.