Home / 2,680.97-3,690.78-2,306.43

Finding the Fourth Proportional to 2,680.97, 3,690.78 and 2,306.43

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Solution

The fourth proportional to 2,680.97, 3,690.78 and 2,306.43 is: 3,175.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,680.97 : 3,690.78 = 2,306.43 : x
  2. Step 2: Convert to fraction form
    2,680.97/3,690.78 = 2,306.43/x
  3. Step 3: Cross multiply
    2,680.97x = 3,690.78 × 2,306.43
  4. Step 4: Simplify right side
    2,680.97x = 8,512,525.72
  5. Step 5: Solve for x
    x = 8,512,525.72/2,680.97
  6. Step 6: Final answer
    x = 3,175.17

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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.