Home / 7,278.90-10,914.75-3,380.82

Finding the Fourth Proportional to 7,278.90, 10,914.75 and 3,380.82

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Solution

The fourth proportional to 7,278.90, 10,914.75 and 3,380.82 is: 5,069.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.90 : 10,914.75 = 3,380.82 : x
  2. Step 2: Convert to fraction form
    7,278.90/10,914.75 = 3,380.82/x
  3. Step 3: Cross multiply
    7,278.90x = 10,914.75 × 3,380.82
  4. Step 4: Simplify right side
    7,278.90x = 36,900,805.10
  5. Step 5: Solve for x
    x = 36,900,805.10/7,278.90
  6. Step 6: Final answer
    x = 5,069.56

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1.5x scale

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.