Home / 7,278.85-10,909.14-3,113.97

Finding the Fourth Proportional to 7,278.85, 10,909.14 and 3,113.97

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Solution

The fourth proportional to 7,278.85, 10,909.14 and 3,113.97 is: 4,667.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.85 : 10,909.14 = 3,113.97 : x
  2. Step 2: Convert to fraction form
    7,278.85/10,909.14 = 3,113.97/x
  3. Step 3: Cross multiply
    7,278.85x = 10,909.14 × 3,113.97
  4. Step 4: Simplify right side
    7,278.85x = 33,970,664.57
  5. Step 5: Solve for x
    x = 33,970,664.57/7,278.85
  6. Step 6: Final answer
    x = 4,667.04

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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.