Home / 7,881.38-11,823.91-2,687.26

Finding the Fourth Proportional to 7,881.38, 11,823.91 and 2,687.26

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Solution

The fourth proportional to 7,881.38, 11,823.91 and 2,687.26 is: 4,031.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881.38 : 11,823.91 = 2,687.26 : x
  2. Step 2: Convert to fraction form
    7,881.38/11,823.91 = 2,687.26/x
  3. Step 3: Cross multiply
    7,881.38x = 11,823.91 × 2,687.26
  4. Step 4: Simplify right side
    7,881.38x = 31,773,920.39
  5. Step 5: Solve for x
    x = 31,773,920.39/7,881.38
  6. Step 6: Final answer
    x = 4,031.52

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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.