Home / 3,812.40-5,719.68-2,253.78

Finding the Fourth Proportional to 3,812.40, 5,719.68 and 2,253.78

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Solution

The fourth proportional to 3,812.40, 5,719.68 and 2,253.78 is: 3,381.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,812.40 : 5,719.68 = 2,253.78 : x
  2. Step 2: Convert to fraction form
    3,812.40/5,719.68 = 2,253.78/x
  3. Step 3: Cross multiply
    3,812.40x = 5,719.68 × 2,253.78
  4. Step 4: Simplify right side
    3,812.40x = 12,890,900.39
  5. Step 5: Solve for x
    x = 12,890,900.39/3,812.40
  6. Step 6: Final answer
    x = 3,381.31

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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.