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Finding the Fourth Proportional to 3,920.96, 5,409.04 and 2,264

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Solution

The fourth proportional to 3,920.96, 5,409.04 and 2,264 is: 3,123.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.96 : 5,409.04 = 2,264 : x
  2. Step 2: Convert to fraction form
    3,920.96/5,409.04 = 2,264/x
  3. Step 3: Cross multiply
    3,920.96x = 5,409.04 × 2,264
  4. Step 4: Simplify right side
    3,920.96x = 12,246,066.56
  5. Step 5: Solve for x
    x = 12,246,066.56/3,920.96
  6. Step 6: Final answer
    x = 3,123.23

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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.