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Finding the Fourth Proportional to 8,927.70, 13,391.48 and 2,687.69

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Solution

The fourth proportional to 8,927.70, 13,391.48 and 2,687.69 is: 4,031.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,927.70 : 13,391.48 = 2,687.69 : x
  2. Step 2: Convert to fraction form
    8,927.70/13,391.48 = 2,687.69/x
  3. Step 3: Cross multiply
    8,927.70x = 13,391.48 × 2,687.69
  4. Step 4: Simplify right side
    8,927.70x = 35,992,079.92
  5. Step 5: Solve for x
    x = 35,992,079.92/8,927.70
  6. Step 6: Final answer
    x = 4,031.51

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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.