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Finding the Fourth Proportional to 3,772.97, 5,659.45 and 2,130.89

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Solution

The fourth proportional to 3,772.97, 5,659.45 and 2,130.89 is: 3,196.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,772.97 : 5,659.45 = 2,130.89 : x
  2. Step 2: Convert to fraction form
    3,772.97/5,659.45 = 2,130.89/x
  3. Step 3: Cross multiply
    3,772.97x = 5,659.45 × 2,130.89
  4. Step 4: Simplify right side
    3,772.97x = 12,059,665.41
  5. Step 5: Solve for x
    x = 12,059,665.41/3,772.97
  6. Step 6: Final answer
    x = 3,196.33

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.