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Finding the Fourth Proportional to 3,387, 5,081.56 and 2,401.72

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Solution

The fourth proportional to 3,387, 5,081.56 and 2,401.72 is: 3,603.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387 : 5,081.56 = 2,401.72 : x
  2. Step 2: Convert to fraction form
    3,387/5,081.56 = 2,401.72/x
  3. Step 3: Cross multiply
    3,387x = 5,081.56 × 2,401.72
  4. Step 4: Simplify right side
    3,387x = 12,204,484.28
  5. Step 5: Solve for x
    x = 12,204,484.28/3,387
  6. Step 6: Final answer
    x = 3,603.33

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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.