Home / 3,888-5,365.59-2,209.47

Finding the Fourth Proportional to 3,888, 5,365.59 and 2,209.47

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Solution

The fourth proportional to 3,888, 5,365.59 and 2,209.47 is: 3,049.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888 : 5,365.59 = 2,209.47 : x
  2. Step 2: Convert to fraction form
    3,888/5,365.59 = 2,209.47/x
  3. Step 3: Cross multiply
    3,888x = 5,365.59 × 2,209.47
  4. Step 4: Simplify right side
    3,888x = 11,855,110.14
  5. Step 5: Solve for x
    x = 11,855,110.14/3,888
  6. Step 6: Final answer
    x = 3,049.15

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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.