Home / 8,221.36-11,335.58-5,705.62

Finding the Fourth Proportional to 8,221.36, 11,335.58 and 5,705.62

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Solution

The fourth proportional to 8,221.36, 11,335.58 and 5,705.62 is: 7,866.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,221.36 : 11,335.58 = 5,705.62 : x
  2. Step 2: Convert to fraction form
    8,221.36/11,335.58 = 5,705.62/x
  3. Step 3: Cross multiply
    8,221.36x = 11,335.58 × 5,705.62
  4. Step 4: Simplify right side
    8,221.36x = 64,676,511.96
  5. Step 5: Solve for x
    x = 64,676,511.96/8,221.36
  6. Step 6: Final answer
    x = 7,866.89

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Half scale
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Double scale
Find fourth proportional to 8,222.36, 11,336.96 and 5,706.62
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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.