Home / 3,888.15-5,365.66-2,209.57

Finding the Fourth Proportional to 3,888.15, 5,365.66 and 2,209.57

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Solution

The fourth proportional to 3,888.15, 5,365.66 and 2,209.57 is: 3,049.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.15 : 5,365.66 = 2,209.57 : x
  2. Step 2: Convert to fraction form
    3,888.15/5,365.66 = 2,209.57/x
  3. Step 3: Cross multiply
    3,888.15x = 5,365.66 × 2,209.57
  4. Step 4: Simplify right side
    3,888.15x = 11,855,801.66
  5. Step 5: Solve for x
    x = 11,855,801.66/3,888.15
  6. Step 6: Final answer
    x = 3,049.21

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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.