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Finding the Fourth Proportional to 2,766.97, 4,120.79 and 2,751.19

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Solution

The fourth proportional to 2,766.97, 4,120.79 and 2,751.19 is: 4,097.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,766.97 : 4,120.79 = 2,751.19 : x
  2. Step 2: Convert to fraction form
    2,766.97/4,120.79 = 2,751.19/x
  3. Step 3: Cross multiply
    2,766.97x = 4,120.79 × 2,751.19
  4. Step 4: Simplify right side
    2,766.97x = 11,337,076.24
  5. Step 5: Solve for x
    x = 11,337,076.24/2,766.97
  6. Step 6: Final answer
    x = 4,097.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.