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Finding the Fourth Proportional to 3,202.78, 4,800.72 and 1,555.66

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Solution

The fourth proportional to 3,202.78, 4,800.72 and 1,555.66 is: 2,331.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,202.78 : 4,800.72 = 1,555.66 : x
  2. Step 2: Convert to fraction form
    3,202.78/4,800.72 = 1,555.66/x
  3. Step 3: Cross multiply
    3,202.78x = 4,800.72 × 1,555.66
  4. Step 4: Simplify right side
    3,202.78x = 7,468,288.08
  5. Step 5: Solve for x
    x = 7,468,288.08/3,202.78
  6. Step 6: Final answer
    x = 2,331.81

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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.