Home / 8,772.49-12,105.99-5,188.73

Finding the Fourth Proportional to 8,772.49, 12,105.99 and 5,188.73

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Solution

The fourth proportional to 8,772.49, 12,105.99 and 5,188.73 is: 7,160.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,772.49 : 12,105.99 = 5,188.73 : x
  2. Step 2: Convert to fraction form
    8,772.49/12,105.99 = 5,188.73/x
  3. Step 3: Cross multiply
    8,772.49x = 12,105.99 × 5,188.73
  4. Step 4: Simplify right side
    8,772.49x = 62,814,713.49
  5. Step 5: Solve for x
    x = 62,814,713.49/8,772.49
  6. Step 6: Final answer
    x = 7,160.42

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Double scale
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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.