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Finding the Fourth Proportional to 8,220.76, 11,346.78 and 5,035.12

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Solution

The fourth proportional to 8,220.76, 11,346.78 and 5,035.12 is: 6,949.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,220.76 : 11,346.78 = 5,035.12 : x
  2. Step 2: Convert to fraction form
    8,220.76/11,346.78 = 5,035.12/x
  3. Step 3: Cross multiply
    8,220.76x = 11,346.78 × 5,035.12
  4. Step 4: Simplify right side
    8,220.76x = 57,132,398.91
  5. Step 5: Solve for x
    x = 57,132,398.91/8,220.76
  6. Step 6: Final answer
    x = 6,949.77

Related Problems

Find fourth proportional to 4,110.38, 5,673.39 and 2,517.56
Half scale
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Double scale
Find fourth proportional to 8,221.76, 11,348.16 and 5,036.12
Similar ratio
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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.