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Finding the Fourth Proportional to 3,388.88, 4,677.32 and 2,146

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Solution

The fourth proportional to 3,388.88, 4,677.32 and 2,146 is: 2,961.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,388.88 : 4,677.32 = 2,146 : x
  2. Step 2: Convert to fraction form
    3,388.88/4,677.32 = 2,146/x
  3. Step 3: Cross multiply
    3,388.88x = 4,677.32 × 2,146
  4. Step 4: Simplify right side
    3,388.88x = 10,037,528.72
  5. Step 5: Solve for x
    x = 10,037,528.72/3,388.88
  6. Step 6: Final answer
    x = 2,961.90

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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.