Home / 3,617.72-4,991.82-2,220.92

Finding the Fourth Proportional to 3,617.72, 4,991.82 and 2,220.92

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Solution

The fourth proportional to 3,617.72, 4,991.82 and 2,220.92 is: 3,064.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,617.72 : 4,991.82 = 2,220.92 : x
  2. Step 2: Convert to fraction form
    3,617.72/4,991.82 = 2,220.92/x
  3. Step 3: Cross multiply
    3,617.72x = 4,991.82 × 2,220.92
  4. Step 4: Simplify right side
    3,617.72x = 11,086,432.87
  5. Step 5: Solve for x
    x = 11,086,432.87/3,617.72
  6. Step 6: Final answer
    x = 3,064.48

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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.