Home / 2,542.70-3,808.38-2,153.90

Finding the Fourth Proportional to 2,542.70, 3,808.38 and 2,153.90

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Solution

The fourth proportional to 2,542.70, 3,808.38 and 2,153.90 is: 3,226.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,542.70 : 3,808.38 = 2,153.90 : x
  2. Step 2: Convert to fraction form
    2,542.70/3,808.38 = 2,153.90/x
  3. Step 3: Cross multiply
    2,542.70x = 3,808.38 × 2,153.90
  4. Step 4: Simplify right side
    2,542.70x = 8,202,869.68
  5. Step 5: Solve for x
    x = 8,202,869.68/2,542.70
  6. Step 6: Final answer
    x = 3,226.05

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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.