Home / 1,999.17-2,757.51-1,212.66

Finding the Fourth Proportional to 1,999.17, 2,757.51 and 1,212.66

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Solution

The fourth proportional to 1,999.17, 2,757.51 and 1,212.66 is: 1,672.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,999.17 : 2,757.51 = 1,212.66 : x
  2. Step 2: Convert to fraction form
    1,999.17/2,757.51 = 1,212.66/x
  3. Step 3: Cross multiply
    1,999.17x = 2,757.51 × 1,212.66
  4. Step 4: Simplify right side
    1,999.17x = 3,343,922.08
  5. Step 5: Solve for x
    x = 3,343,922.08/1,999.17
  6. Step 6: Final answer
    x = 1,672.66

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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.