Home / 3,679.74-5,519.70-1,214.78

Finding the Fourth Proportional to 3,679.74, 5,519.70 and 1,214.78

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Solution

The fourth proportional to 3,679.74, 5,519.70 and 1,214.78 is: 1,822.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.74 : 5,519.70 = 1,214.78 : x
  2. Step 2: Convert to fraction form
    3,679.74/5,519.70 = 1,214.78/x
  3. Step 3: Cross multiply
    3,679.74x = 5,519.70 × 1,214.78
  4. Step 4: Simplify right side
    3,679.74x = 6,705,193.57
  5. Step 5: Solve for x
    x = 6,705,193.57/3,679.74
  6. Step 6: Final answer
    x = 1,822.19

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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.