Home / 7,789.68-11,687.40-2,862.54

Finding the Fourth Proportional to 7,789.68, 11,687.40 and 2,862.54

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Solution

The fourth proportional to 7,789.68, 11,687.40 and 2,862.54 is: 4,294.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,789.68 : 11,687.40 = 2,862.54 : x
  2. Step 2: Convert to fraction form
    7,789.68/11,687.40 = 2,862.54/x
  3. Step 3: Cross multiply
    7,789.68x = 11,687.40 × 2,862.54
  4. Step 4: Simplify right side
    7,789.68x = 33,455,650.00
  5. Step 5: Solve for x
    x = 33,455,650.00/7,789.68
  6. Step 6: Final answer
    x = 4,294.87

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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.