Home / 2,679.40-3,687.78-2,328.04

Finding the Fourth Proportional to 2,679.40, 3,687.78 and 2,328.04

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Solution

The fourth proportional to 2,679.40, 3,687.78 and 2,328.04 is: 3,204.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.40 : 3,687.78 = 2,328.04 : x
  2. Step 2: Convert to fraction form
    2,679.40/3,687.78 = 2,328.04/x
  3. Step 3: Cross multiply
    2,679.40x = 3,687.78 × 2,328.04
  4. Step 4: Simplify right side
    2,679.40x = 8,585,299.35
  5. Step 5: Solve for x
    x = 8,585,299.35/2,679.40
  6. Step 6: Final answer
    x = 3,204.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.