Home / 2,110.74-3,165.75-812.22

Finding the Fourth Proportional to 2,110.74, 3,165.75 and 812.22

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Solution

The fourth proportional to 2,110.74, 3,165.75 and 812.22 is: 1,218.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,110.74 : 3,165.75 = 812.22 : x
  2. Step 2: Convert to fraction form
    2,110.74/3,165.75 = 812.22/x
  3. Step 3: Cross multiply
    2,110.74x = 3,165.75 × 812.22
  4. Step 4: Simplify right side
    2,110.74x = 2,571,285.47
  5. Step 5: Solve for x
    x = 2,571,285.47/2,110.74
  6. Step 6: Final answer
    x = 1,218.19

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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.