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Finding the Fourth Proportional to 4,739.82, 7,108.66 and 2,660.76

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Solution

The fourth proportional to 4,739.82, 7,108.66 and 2,660.76 is: 3,990.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,739.82 : 7,108.66 = 2,660.76 : x
  2. Step 2: Convert to fraction form
    4,739.82/7,108.66 = 2,660.76/x
  3. Step 3: Cross multiply
    4,739.82x = 7,108.66 × 2,660.76
  4. Step 4: Simplify right side
    4,739.82x = 18,914,438.18
  5. Step 5: Solve for x
    x = 18,914,438.18/4,739.82
  6. Step 6: Final answer
    x = 3,990.54

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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.