Home / 3,874.50-5,346.81-2,218.50

Finding the Fourth Proportional to 3,874.50, 5,346.81 and 2,218.50

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Solution

The fourth proportional to 3,874.50, 5,346.81 and 2,218.50 is: 3,061.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,874.50 : 5,346.81 = 2,218.50 : x
  2. Step 2: Convert to fraction form
    3,874.50/5,346.81 = 2,218.50/x
  3. Step 3: Cross multiply
    3,874.50x = 5,346.81 × 2,218.50
  4. Step 4: Simplify right side
    3,874.50x = 11,861,897.99
  5. Step 5: Solve for x
    x = 11,861,897.99/3,874.50
  6. Step 6: Final answer
    x = 3,061.53

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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.