Home / 2,066.78-2,851.21-1,227.02

Finding the Fourth Proportional to 2,066.78, 2,851.21 and 1,227.02

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Solution

The fourth proportional to 2,066.78, 2,851.21 and 1,227.02 is: 1,692.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,066.78 : 2,851.21 = 1,227.02 : x
  2. Step 2: Convert to fraction form
    2,066.78/2,851.21 = 1,227.02/x
  3. Step 3: Cross multiply
    2,066.78x = 2,851.21 × 1,227.02
  4. Step 4: Simplify right side
    2,066.78x = 3,498,478.97
  5. Step 5: Solve for x
    x = 3,498,478.97/2,066.78
  6. Step 6: Final answer
    x = 1,692.72

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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.