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Finding the Fourth Proportional to 7,435.69, 11,221.01 and 7,187.83

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Solution

The fourth proportional to 7,435.69, 11,221.01 and 7,187.83 is: 10,846.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,435.69 : 11,221.01 = 7,187.83 : x
  2. Step 2: Convert to fraction form
    7,435.69/11,221.01 = 7,187.83/x
  3. Step 3: Cross multiply
    7,435.69x = 11,221.01 × 7,187.83
  4. Step 4: Simplify right side
    7,435.69x = 80,654,712.31
  5. Step 5: Solve for x
    x = 80,654,712.31/7,435.69
  6. Step 6: Final answer
    x = 10,846.97

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.