Home / 2,218.62-3,062.07-1,287.66

Finding the Fourth Proportional to 2,218.62, 3,062.07 and 1,287.66

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Solution

The fourth proportional to 2,218.62, 3,062.07 and 1,287.66 is: 1,777.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.62 : 3,062.07 = 1,287.66 : x
  2. Step 2: Convert to fraction form
    2,218.62/3,062.07 = 1,287.66/x
  3. Step 3: Cross multiply
    2,218.62x = 3,062.07 × 1,287.66
  4. Step 4: Simplify right side
    2,218.62x = 3,942,905.06
  5. Step 5: Solve for x
    x = 3,942,905.06/2,218.62
  6. Step 6: Final answer
    x = 1,777.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.