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Finding the Fourth Proportional to 2,291.84, 3,163.20 and 1,360.88

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Solution

The fourth proportional to 2,291.84, 3,163.20 and 1,360.88 is: 1,878.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.84 : 3,163.20 = 1,360.88 : x
  2. Step 2: Convert to fraction form
    2,291.84/3,163.20 = 1,360.88/x
  3. Step 3: Cross multiply
    2,291.84x = 3,163.20 × 1,360.88
  4. Step 4: Simplify right side
    2,291.84x = 4,304,735.62
  5. Step 5: Solve for x
    x = 4,304,735.62/2,291.84
  6. Step 6: Final answer
    x = 1,878.29

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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.