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Finding the Fourth Proportional to 3,561.71, 4,916.51 and 2,680.08

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Solution

The fourth proportional to 3,561.71, 4,916.51 and 2,680.08 is: 3,699.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,561.71 : 4,916.51 = 2,680.08 : x
  2. Step 2: Convert to fraction form
    3,561.71/4,916.51 = 2,680.08/x
  3. Step 3: Cross multiply
    3,561.71x = 4,916.51 × 2,680.08
  4. Step 4: Simplify right side
    3,561.71x = 13,176,640.12
  5. Step 5: Solve for x
    x = 13,176,640.12/3,561.71
  6. Step 6: Final answer
    x = 3,699.53

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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.