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Finding the Fourth Proportional to 2,921.68, 4,353.22 and 2,843.31

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Solution

The fourth proportional to 2,921.68, 4,353.22 and 2,843.31 is: 4,236.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.68 : 4,353.22 = 2,843.31 : x
  2. Step 2: Convert to fraction form
    2,921.68/4,353.22 = 2,843.31/x
  3. Step 3: Cross multiply
    2,921.68x = 4,353.22 × 2,843.31
  4. Step 4: Simplify right side
    2,921.68x = 12,377,553.96
  5. Step 5: Solve for x
    x = 12,377,553.96/2,921.68
  6. Step 6: Final answer
    x = 4,236.45

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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.