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Finding the Fourth Proportional to 3,561.80, 4,916.92 and 2,677.90

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Solution

The fourth proportional to 3,561.80, 4,916.92 and 2,677.90 is: 3,696.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,561.80 : 4,916.92 = 2,677.90 : x
  2. Step 2: Convert to fraction form
    3,561.80/4,916.92 = 2,677.90/x
  3. Step 3: Cross multiply
    3,561.80x = 4,916.92 × 2,677.90
  4. Step 4: Simplify right side
    3,561.80x = 13,167,020.07
  5. Step 5: Solve for x
    x = 13,167,020.07/3,561.80
  6. Step 6: Final answer
    x = 3,696.73

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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.