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Finding the Fourth Proportional to 8,647.70, 11,934.39 and 6,519.47

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Solution

The fourth proportional to 8,647.70, 11,934.39 and 6,519.47 is: 8,997.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,647.70 : 11,934.39 = 6,519.47 : x
  2. Step 2: Convert to fraction form
    8,647.70/11,934.39 = 6,519.47/x
  3. Step 3: Cross multiply
    8,647.70x = 11,934.39 × 6,519.47
  4. Step 4: Simplify right side
    8,647.70x = 77,805,897.57
  5. Step 5: Solve for x
    x = 77,805,897.57/8,647.70
  6. Step 6: Final answer
    x = 8,997.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.