Home / 7,922.38-11,886.20-2,657.91

Finding the Fourth Proportional to 7,922.38, 11,886.20 and 2,657.91

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Solution

The fourth proportional to 7,922.38, 11,886.20 and 2,657.91 is: 3,987.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,922.38 : 11,886.20 = 2,657.91 : x
  2. Step 2: Convert to fraction form
    7,922.38/11,886.20 = 2,657.91/x
  3. Step 3: Cross multiply
    7,922.38x = 11,886.20 × 2,657.91
  4. Step 4: Simplify right side
    7,922.38x = 31,592,456.49
  5. Step 5: Solve for x
    x = 31,592,456.49/7,922.38
  6. Step 6: Final answer
    x = 3,987.75

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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.