Home / 2,689.67-4,037.79-1,812.44

Finding the Fourth Proportional to 2,689.67, 4,037.79 and 1,812.44

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Solution

The fourth proportional to 2,689.67, 4,037.79 and 1,812.44 is: 2,720.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.67 : 4,037.79 = 1,812.44 : x
  2. Step 2: Convert to fraction form
    2,689.67/4,037.79 = 1,812.44/x
  3. Step 3: Cross multiply
    2,689.67x = 4,037.79 × 1,812.44
  4. Step 4: Simplify right side
    2,689.67x = 7,318,252.11
  5. Step 5: Solve for x
    x = 7,318,252.11/2,689.67
  6. Step 6: Final answer
    x = 2,720.87

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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.