Home / 5,297.30-7,949.20-2,178.80

Finding the Fourth Proportional to 5,297.30, 7,949.20 and 2,178.80

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Solution

The fourth proportional to 5,297.30, 7,949.20 and 2,178.80 is: 3,269.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,297.30 : 7,949.20 = 2,178.80 : x
  2. Step 2: Convert to fraction form
    5,297.30/7,949.20 = 2,178.80/x
  3. Step 3: Cross multiply
    5,297.30x = 7,949.20 × 2,178.80
  4. Step 4: Simplify right side
    5,297.30x = 17,319,716.96
  5. Step 5: Solve for x
    x = 17,319,716.96/5,297.30
  6. Step 6: Final answer
    x = 3,269.54

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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.