Home / 8,221.56-11,320.89-6,892.95

Finding the Fourth Proportional to 8,221.56, 11,320.89 and 6,892.95

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Solution

The fourth proportional to 8,221.56, 11,320.89 and 6,892.95 is: 9,491.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,221.56 : 11,320.89 = 6,892.95 : x
  2. Step 2: Convert to fraction form
    8,221.56/11,320.89 = 6,892.95/x
  3. Step 3: Cross multiply
    8,221.56x = 11,320.89 × 6,892.95
  4. Step 4: Simplify right side
    8,221.56x = 78,034,328.73
  5. Step 5: Solve for x
    x = 78,034,328.73/8,221.56
  6. Step 6: Final answer
    x = 9,491.43

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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.