Home / 8,123.73-11,212.65-5,286.21

Finding the Fourth Proportional to 8,123.73, 11,212.65 and 5,286.21

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Solution

The fourth proportional to 8,123.73, 11,212.65 and 5,286.21 is: 7,296.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,123.73 : 11,212.65 = 5,286.21 : x
  2. Step 2: Convert to fraction form
    8,123.73/11,212.65 = 5,286.21/x
  3. Step 3: Cross multiply
    8,123.73x = 11,212.65 × 5,286.21
  4. Step 4: Simplify right side
    8,123.73x = 59,272,422.56
  5. Step 5: Solve for x
    x = 59,272,422.56/8,123.73
  6. Step 6: Final answer
    x = 7,296.21

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Half scale
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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.