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Finding the Fourth Proportional to 8,696.88, 13,045.31 and 4,079.88

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Solution

The fourth proportional to 8,696.88, 13,045.31 and 4,079.88 is: 6,119.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,696.88 : 13,045.31 = 4,079.88 : x
  2. Step 2: Convert to fraction form
    8,696.88/13,045.31 = 4,079.88/x
  3. Step 3: Cross multiply
    8,696.88x = 13,045.31 × 4,079.88
  4. Step 4: Simplify right side
    8,696.88x = 53,223,299.36
  5. Step 5: Solve for x
    x = 53,223,299.36/8,696.88
  6. Step 6: Final answer
    x = 6,119.82

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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.