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Finding the Fourth Proportional to 2,278.08, 3,414.96 and 738

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Solution

The fourth proportional to 2,278.08, 3,414.96 and 738 is: 1,106.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.08 : 3,414.96 = 738 : x
  2. Step 2: Convert to fraction form
    2,278.08/3,414.96 = 738/x
  3. Step 3: Cross multiply
    2,278.08x = 3,414.96 × 738
  4. Step 4: Simplify right side
    2,278.08x = 2,520,240.48
  5. Step 5: Solve for x
    x = 2,520,240.48/2,278.08
  6. Step 6: Final answer
    x = 1,106.30

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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.