Home / 7,854.11-11,780.85-2,659.98

Finding the Fourth Proportional to 7,854.11, 11,780.85 and 2,659.98

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Solution

The fourth proportional to 7,854.11, 11,780.85 and 2,659.98 is: 3,989.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,854.11 : 11,780.85 = 2,659.98 : x
  2. Step 2: Convert to fraction form
    7,854.11/11,780.85 = 2,659.98/x
  3. Step 3: Cross multiply
    7,854.11x = 11,780.85 × 2,659.98
  4. Step 4: Simplify right side
    7,854.11x = 31,336,825.38
  5. Step 5: Solve for x
    x = 31,336,825.38/7,854.11
  6. Step 6: Final answer
    x = 3,989.87

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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.