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Finding the Fourth Proportional to 5,420.70, 7,481.03 and 3,062.79

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Solution

The fourth proportional to 5,420.70, 7,481.03 and 3,062.79 is: 4,226.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.70 : 7,481.03 = 3,062.79 : x
  2. Step 2: Convert to fraction form
    5,420.70/7,481.03 = 3,062.79/x
  3. Step 3: Cross multiply
    5,420.70x = 7,481.03 × 3,062.79
  4. Step 4: Simplify right side
    5,420.70x = 22,912,808.56
  5. Step 5: Solve for x
    x = 22,912,808.56/5,420.70
  6. Step 6: Final answer
    x = 4,226.91

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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.