Home / 3,888.45-5,366.61-2,209.50

Finding the Fourth Proportional to 3,888.45, 5,366.61 and 2,209.50

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Solution

The fourth proportional to 3,888.45, 5,366.61 and 2,209.50 is: 3,049.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.45 : 5,366.61 = 2,209.50 : x
  2. Step 2: Convert to fraction form
    3,888.45/5,366.61 = 2,209.50/x
  3. Step 3: Cross multiply
    3,888.45x = 5,366.61 × 2,209.50
  4. Step 4: Simplify right side
    3,888.45x = 11,857,524.80
  5. Step 5: Solve for x
    x = 11,857,524.80/3,888.45
  6. Step 6: Final answer
    x = 3,049.42

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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.