Home / 7,965.53-11,948.57-2,122.15

Finding the Fourth Proportional to 7,965.53, 11,948.57 and 2,122.15

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Solution

The fourth proportional to 7,965.53, 11,948.57 and 2,122.15 is: 3,183.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,965.53 : 11,948.57 = 2,122.15 : x
  2. Step 2: Convert to fraction form
    7,965.53/11,948.57 = 2,122.15/x
  3. Step 3: Cross multiply
    7,965.53x = 11,948.57 × 2,122.15
  4. Step 4: Simplify right side
    7,965.53x = 25,356,657.83
  5. Step 5: Solve for x
    x = 25,356,657.83/7,965.53
  6. Step 6: Final answer
    x = 3,183.30

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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.