Home / 7,721.64-11,580.66-2,175.53

Finding the Fourth Proportional to 7,721.64, 11,580.66 and 2,175.53

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Solution

The fourth proportional to 7,721.64, 11,580.66 and 2,175.53 is: 3,262.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721.64 : 11,580.66 = 2,175.53 : x
  2. Step 2: Convert to fraction form
    7,721.64/11,580.66 = 2,175.53/x
  3. Step 3: Cross multiply
    7,721.64x = 11,580.66 × 2,175.53
  4. Step 4: Simplify right side
    7,721.64x = 25,194,015.35
  5. Step 5: Solve for x
    x = 25,194,015.35/7,721.64
  6. Step 6: Final answer
    x = 3,262.78

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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.