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Finding the Fourth Proportional to 2,686.88, 3,709.16 and 1,792.11

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Solution

The fourth proportional to 2,686.88, 3,709.16 and 1,792.11 is: 2,473.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.88 : 3,709.16 = 1,792.11 : x
  2. Step 2: Convert to fraction form
    2,686.88/3,709.16 = 1,792.11/x
  3. Step 3: Cross multiply
    2,686.88x = 3,709.16 × 1,792.11
  4. Step 4: Simplify right side
    2,686.88x = 6,647,213.77
  5. Step 5: Solve for x
    x = 6,647,213.77/2,686.88
  6. Step 6: Final answer
    x = 2,473.96

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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.