Home / 3,886.80-5,362.94-2,208.08

Finding the Fourth Proportional to 3,886.80, 5,362.94 and 2,208.08

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Solution

The fourth proportional to 3,886.80, 5,362.94 and 2,208.08 is: 3,046.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.80 : 5,362.94 = 2,208.08 : x
  2. Step 2: Convert to fraction form
    3,886.80/5,362.94 = 2,208.08/x
  3. Step 3: Cross multiply
    3,886.80x = 5,362.94 × 2,208.08
  4. Step 4: Simplify right side
    3,886.80x = 11,841,800.56
  5. Step 5: Solve for x
    x = 11,841,800.56/3,886.80
  6. Step 6: Final answer
    x = 3,046.67

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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.