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Finding the Fourth Proportional to 8,702.69, 13,053.57 and 3,079.97

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Solution

The fourth proportional to 8,702.69, 13,053.57 and 3,079.97 is: 4,619.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,702.69 : 13,053.57 = 3,079.97 : x
  2. Step 2: Convert to fraction form
    8,702.69/13,053.57 = 3,079.97/x
  3. Step 3: Cross multiply
    8,702.69x = 13,053.57 × 3,079.97
  4. Step 4: Simplify right side
    8,702.69x = 40,204,603.99
  5. Step 5: Solve for x
    x = 40,204,603.99/8,702.69
  6. Step 6: Final answer
    x = 4,619.79

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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.