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Finding the Fourth Proportional to 2,939.88, 4,388.82 and 2,837.40

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Solution

The fourth proportional to 2,939.88, 4,388.82 and 2,837.40 is: 4,235.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.88 : 4,388.82 = 2,837.40 : x
  2. Step 2: Convert to fraction form
    2,939.88/4,388.82 = 2,837.40/x
  3. Step 3: Cross multiply
    2,939.88x = 4,388.82 × 2,837.40
  4. Step 4: Simplify right side
    2,939.88x = 12,452,837.87
  5. Step 5: Solve for x
    x = 12,452,837.87/2,939.88
  6. Step 6: Final answer
    x = 4,235.83

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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.