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Finding the Fourth Proportional to 5,222.05, 7,778.81 and 4,939.11

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Solution

The fourth proportional to 5,222.05, 7,778.81 and 4,939.11 is: 7,357.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,222.05 : 7,778.81 = 4,939.11 : x
  2. Step 2: Convert to fraction form
    5,222.05/7,778.81 = 4,939.11/x
  3. Step 3: Cross multiply
    5,222.05x = 7,778.81 × 4,939.11
  4. Step 4: Simplify right side
    5,222.05x = 38,420,410.61
  5. Step 5: Solve for x
    x = 38,420,410.61/5,222.05
  6. Step 6: Final answer
    x = 7,357.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.