Home / 5,278.74-7,286.31-3,288.12

Finding the Fourth Proportional to 5,278.74, 7,286.31 and 3,288.12

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Solution

The fourth proportional to 5,278.74, 7,286.31 and 3,288.12 is: 4,538.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.74 : 7,286.31 = 3,288.12 : x
  2. Step 2: Convert to fraction form
    5,278.74/7,286.31 = 3,288.12/x
  3. Step 3: Cross multiply
    5,278.74x = 7,286.31 × 3,288.12
  4. Step 4: Simplify right side
    5,278.74x = 23,958,261.64
  5. Step 5: Solve for x
    x = 23,958,261.64/5,278.74
  6. Step 6: Final answer
    x = 4,538.63

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1.5x scale

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.