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Finding the Fourth Proportional to 3,689.79, 5,531.07 and 2,369.85

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Solution

The fourth proportional to 3,689.79, 5,531.07 and 2,369.85 is: 3,552.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,689.79 : 5,531.07 = 2,369.85 : x
  2. Step 2: Convert to fraction form
    3,689.79/5,531.07 = 2,369.85/x
  3. Step 3: Cross multiply
    3,689.79x = 5,531.07 × 2,369.85
  4. Step 4: Simplify right side
    3,689.79x = 13,107,806.24
  5. Step 5: Solve for x
    x = 13,107,806.24/3,689.79
  6. Step 6: Final answer
    x = 3,552.45

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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.