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Finding the Fourth Proportional to 2,918.68, 4,380.24 and 2,340.66

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Solution

The fourth proportional to 2,918.68, 4,380.24 and 2,340.66 is: 3,512.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.68 : 4,380.24 = 2,340.66 : x
  2. Step 2: Convert to fraction form
    2,918.68/4,380.24 = 2,340.66/x
  3. Step 3: Cross multiply
    2,918.68x = 4,380.24 × 2,340.66
  4. Step 4: Simplify right side
    2,918.68x = 10,252,677.76
  5. Step 5: Solve for x
    x = 10,252,677.76/2,918.68
  6. Step 6: Final answer
    x = 3,512.78

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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.