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Finding the Fourth Proportional to 2,708.67, 4,062.41 and 760.83

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Solution

The fourth proportional to 2,708.67, 4,062.41 and 760.83 is: 1,141.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,708.67 : 4,062.41 = 760.83 : x
  2. Step 2: Convert to fraction form
    2,708.67/4,062.41 = 760.83/x
  3. Step 3: Cross multiply
    2,708.67x = 4,062.41 × 760.83
  4. Step 4: Simplify right side
    2,708.67x = 3,090,799.60
  5. Step 5: Solve for x
    x = 3,090,799.60/2,708.67
  6. Step 6: Final answer
    x = 1,141.08

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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.