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Finding the Fourth Proportional to 8,691.88, 13,036.92 and 2,848.56

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Solution

The fourth proportional to 8,691.88, 13,036.92 and 2,848.56 is: 4,272.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691.88 : 13,036.92 = 2,848.56 : x
  2. Step 2: Convert to fraction form
    8,691.88/13,036.92 = 2,848.56/x
  3. Step 3: Cross multiply
    8,691.88x = 13,036.92 × 2,848.56
  4. Step 4: Simplify right side
    8,691.88x = 37,136,448.84
  5. Step 5: Solve for x
    x = 37,136,448.84/8,691.88
  6. Step 6: Final answer
    x = 4,272.55

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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.