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Finding the Fourth Proportional to 1,769.78, 2,630.81 and 1,717.34

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Solution

The fourth proportional to 1,769.78, 2,630.81 and 1,717.34 is: 2,552.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,769.78 : 2,630.81 = 1,717.34 : x
  2. Step 2: Convert to fraction form
    1,769.78/2,630.81 = 1,717.34/x
  3. Step 3: Cross multiply
    1,769.78x = 2,630.81 × 1,717.34
  4. Step 4: Simplify right side
    1,769.78x = 4,517,986.38
  5. Step 5: Solve for x
    x = 4,517,986.38/1,769.78
  6. Step 6: Final answer
    x = 2,552.85

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.