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Finding the Fourth Proportional to 2,734.80, 4,101.98 and 760.46

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Solution

The fourth proportional to 2,734.80, 4,101.98 and 760.46 is: 1,140.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,734.80 : 4,101.98 = 760.46 : x
  2. Step 2: Convert to fraction form
    2,734.80/4,101.98 = 760.46/x
  3. Step 3: Cross multiply
    2,734.80x = 4,101.98 × 760.46
  4. Step 4: Simplify right side
    2,734.80x = 3,119,403.87
  5. Step 5: Solve for x
    x = 3,119,403.87/2,734.80
  6. Step 6: Final answer
    x = 1,140.63

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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.