Home / 3,965.11-5,471.80-2,196.70

Finding the Fourth Proportional to 3,965.11, 5,471.80 and 2,196.70

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Solution

The fourth proportional to 3,965.11, 5,471.80 and 2,196.70 is: 3,031.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,965.11 : 5,471.80 = 2,196.70 : x
  2. Step 2: Convert to fraction form
    3,965.11/5,471.80 = 2,196.70/x
  3. Step 3: Cross multiply
    3,965.11x = 5,471.80 × 2,196.70
  4. Step 4: Simplify right side
    3,965.11x = 12,019,903.06
  5. Step 5: Solve for x
    x = 12,019,903.06/3,965.11
  6. Step 6: Final answer
    x = 3,031.42

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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.