Home / 3,388.56-5,081.64-1,538.12

Finding the Fourth Proportional to 3,388.56, 5,081.64 and 1,538.12

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Solution

The fourth proportional to 3,388.56, 5,081.64 and 1,538.12 is: 2,306.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,388.56 : 5,081.64 = 1,538.12 : x
  2. Step 2: Convert to fraction form
    3,388.56/5,081.64 = 1,538.12/x
  3. Step 3: Cross multiply
    3,388.56x = 5,081.64 × 1,538.12
  4. Step 4: Simplify right side
    3,388.56x = 7,816,172.12
  5. Step 5: Solve for x
    x = 7,816,172.12/3,388.56
  6. Step 6: Final answer
    x = 2,306.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.