Home / 3,689.30-5,531.18-1,608.90

Finding the Fourth Proportional to 3,689.30, 5,531.18 and 1,608.90

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Solution

The fourth proportional to 3,689.30, 5,531.18 and 1,608.90 is: 2,412.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,689.30 : 5,531.18 = 1,608.90 : x
  2. Step 2: Convert to fraction form
    3,689.30/5,531.18 = 1,608.90/x
  3. Step 3: Cross multiply
    3,689.30x = 5,531.18 × 1,608.90
  4. Step 4: Simplify right side
    3,689.30x = 8,899,115.50
  5. Step 5: Solve for x
    x = 8,899,115.50/3,689.30
  6. Step 6: Final answer
    x = 2,412.14

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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.