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Finding the Fourth Proportional to 4,872.70, 7,309.05 and 2,799.10

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Solution

The fourth proportional to 4,872.70, 7,309.05 and 2,799.10 is: 4,198.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,872.70 : 7,309.05 = 2,799.10 : x
  2. Step 2: Convert to fraction form
    4,872.70/7,309.05 = 2,799.10/x
  3. Step 3: Cross multiply
    4,872.70x = 7,309.05 × 2,799.10
  4. Step 4: Simplify right side
    4,872.70x = 20,458,761.86
  5. Step 5: Solve for x
    x = 20,458,761.86/4,872.70
  6. Step 6: Final answer
    x = 4,198.65

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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.