Home / 2,641.33-3,638.68-2,221.69

Finding the Fourth Proportional to 2,641.33, 3,638.68 and 2,221.69

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Solution

The fourth proportional to 2,641.33, 3,638.68 and 2,221.69 is: 3,060.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,641.33 : 3,638.68 = 2,221.69 : x
  2. Step 2: Convert to fraction form
    2,641.33/3,638.68 = 2,221.69/x
  3. Step 3: Cross multiply
    2,641.33x = 3,638.68 × 2,221.69
  4. Step 4: Simplify right side
    2,641.33x = 8,084,018.97
  5. Step 5: Solve for x
    x = 8,084,018.97/2,641.33
  6. Step 6: Final answer
    x = 3,060.59

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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.