Home / 2,686.44-3,706.33-1,691.78

Finding the Fourth Proportional to 2,686.44, 3,706.33 and 1,691.78

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Solution

The fourth proportional to 2,686.44, 3,706.33 and 1,691.78 is: 2,334.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.44 : 3,706.33 = 1,691.78 : x
  2. Step 2: Convert to fraction form
    2,686.44/3,706.33 = 1,691.78/x
  3. Step 3: Cross multiply
    2,686.44x = 3,706.33 × 1,691.78
  4. Step 4: Simplify right side
    2,686.44x = 6,270,294.97
  5. Step 5: Solve for x
    x = 6,270,294.97/2,686.44
  6. Step 6: Final answer
    x = 2,334.05

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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.