Home / 5,145.73-7,721.78-2,372.79

Finding the Fourth Proportional to 5,145.73, 7,721.78 and 2,372.79

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Solution

The fourth proportional to 5,145.73, 7,721.78 and 2,372.79 is: 3,560.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.73 : 7,721.78 = 2,372.79 : x
  2. Step 2: Convert to fraction form
    5,145.73/7,721.78 = 2,372.79/x
  3. Step 3: Cross multiply
    5,145.73x = 7,721.78 × 2,372.79
  4. Step 4: Simplify right side
    5,145.73x = 18,322,192.81
  5. Step 5: Solve for x
    x = 18,322,192.81/5,145.73
  6. Step 6: Final answer
    x = 3,560.66

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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.