Home / 5,415.06-7,472.82-3,318.78

Finding the Fourth Proportional to 5,415.06, 7,472.82 and 3,318.78

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Solution

The fourth proportional to 5,415.06, 7,472.82 and 3,318.78 is: 4,579.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.06 : 7,472.82 = 3,318.78 : x
  2. Step 2: Convert to fraction form
    5,415.06/7,472.82 = 3,318.78/x
  3. Step 3: Cross multiply
    5,415.06x = 7,472.82 × 3,318.78
  4. Step 4: Simplify right side
    5,415.06x = 24,800,645.56
  5. Step 5: Solve for x
    x = 24,800,645.56/5,415.06
  6. Step 6: Final answer
    x = 4,579.94

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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.