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Finding the Fourth Proportional to 3,388.62, 5,085.08 and 1,440.82

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Solution

The fourth proportional to 3,388.62, 5,085.08 and 1,440.82 is: 2,162.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,388.62 : 5,085.08 = 1,440.82 : x
  2. Step 2: Convert to fraction form
    3,388.62/5,085.08 = 1,440.82/x
  3. Step 3: Cross multiply
    3,388.62x = 5,085.08 × 1,440.82
  4. Step 4: Simplify right side
    3,388.62x = 7,326,684.97
  5. Step 5: Solve for x
    x = 7,326,684.97/3,388.62
  6. Step 6: Final answer
    x = 2,162.14

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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.