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Finding the Fourth Proportional to 1,787.79, 2,677.10 and 1,169.70

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Solution

The fourth proportional to 1,787.79, 2,677.10 and 1,169.70 is: 1,751.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787.79 : 2,677.10 = 1,169.70 : x
  2. Step 2: Convert to fraction form
    1,787.79/2,677.10 = 1,169.70/x
  3. Step 3: Cross multiply
    1,787.79x = 2,677.10 × 1,169.70
  4. Step 4: Simplify right side
    1,787.79x = 3,131,403.87
  5. Step 5: Solve for x
    x = 3,131,403.87/1,787.79
  6. Step 6: Final answer
    x = 1,751.55

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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.