Home / 3,689.40-5,531.22-2,226.36

Finding the Fourth Proportional to 3,689.40, 5,531.22 and 2,226.36

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Solution

The fourth proportional to 3,689.40, 5,531.22 and 2,226.36 is: 3,337.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,689.40 : 5,531.22 = 2,226.36 : x
  2. Step 2: Convert to fraction form
    3,689.40/5,531.22 = 2,226.36/x
  3. Step 3: Cross multiply
    3,689.40x = 5,531.22 × 2,226.36
  4. Step 4: Simplify right side
    3,689.40x = 12,314,486.96
  5. Step 5: Solve for x
    x = 12,314,486.96/3,689.40
  6. Step 6: Final answer
    x = 3,337.80

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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.