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Finding the Fourth Proportional to 2,114.46, 3,169.85 and 881.10

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Solution

The fourth proportional to 2,114.46, 3,169.85 and 881.10 is: 1,320.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.46 : 3,169.85 = 881.10 : x
  2. Step 2: Convert to fraction form
    2,114.46/3,169.85 = 881.10/x
  3. Step 3: Cross multiply
    2,114.46x = 3,169.85 × 881.10
  4. Step 4: Simplify right side
    2,114.46x = 2,792,950.43
  5. Step 5: Solve for x
    x = 2,792,950.43/2,114.46
  6. Step 6: Final answer
    x = 1,320.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.