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Finding the Fourth Proportional to 3,128.97, 4,294.97 and 2,766.96

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Solution

The fourth proportional to 3,128.97, 4,294.97 and 2,766.96 is: 3,798.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.97 : 4,294.97 = 2,766.96 : x
  2. Step 2: Convert to fraction form
    3,128.97/4,294.97 = 2,766.96/x
  3. Step 3: Cross multiply
    3,128.97x = 4,294.97 × 2,766.96
  4. Step 4: Simplify right side
    3,128.97x = 11,884,010.19
  5. Step 5: Solve for x
    x = 11,884,010.19/3,128.97
  6. Step 6: Final answer
    x = 3,798.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.