Home / 2,265.27-3,121.28-2,109.43

Finding the Fourth Proportional to 2,265.27, 3,121.28 and 2,109.43

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Solution

The fourth proportional to 2,265.27, 3,121.28 and 2,109.43 is: 2,906.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,265.27 : 3,121.28 = 2,109.43 : x
  2. Step 2: Convert to fraction form
    2,265.27/3,121.28 = 2,109.43/x
  3. Step 3: Cross multiply
    2,265.27x = 3,121.28 × 2,109.43
  4. Step 4: Simplify right side
    2,265.27x = 6,584,111.12
  5. Step 5: Solve for x
    x = 6,584,111.12/2,265.27
  6. Step 6: Final answer
    x = 2,906.55

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1.5x scale

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.