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Finding the Fourth Proportional to 2,110.84, 3,166.50 and 878.10

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Solution

The fourth proportional to 2,110.84, 3,166.50 and 878.10 is: 1,317.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,110.84 : 3,166.50 = 878.10 : x
  2. Step 2: Convert to fraction form
    2,110.84/3,166.50 = 878.10/x
  3. Step 3: Cross multiply
    2,110.84x = 3,166.50 × 878.10
  4. Step 4: Simplify right side
    2,110.84x = 2,780,503.65
  5. Step 5: Solve for x
    x = 2,780,503.65/2,110.84
  6. Step 6: Final answer
    x = 1,317.25

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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.