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Finding the Fourth Proportional to 3,847.73, 5,309.87 and 2,079.34

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Solution

The fourth proportional to 3,847.73, 5,309.87 and 2,079.34 is: 2,869.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,847.73 : 5,309.87 = 2,079.34 : x
  2. Step 2: Convert to fraction form
    3,847.73/5,309.87 = 2,079.34/x
  3. Step 3: Cross multiply
    3,847.73x = 5,309.87 × 2,079.34
  4. Step 4: Simplify right side
    3,847.73x = 11,041,013.11
  5. Step 5: Solve for x
    x = 11,041,013.11/3,847.73
  6. Step 6: Final answer
    x = 2,869.49

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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.