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Finding the Fourth Proportional to 5,651.38, 7,801.60 and 3,974.22

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Solution

The fourth proportional to 5,651.38, 7,801.60 and 3,974.22 is: 5,486.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,651.38 : 7,801.60 = 3,974.22 : x
  2. Step 2: Convert to fraction form
    5,651.38/7,801.60 = 3,974.22/x
  3. Step 3: Cross multiply
    5,651.38x = 7,801.60 × 3,974.22
  4. Step 4: Simplify right side
    5,651.38x = 31,005,274.75
  5. Step 5: Solve for x
    x = 31,005,274.75/5,651.38
  6. Step 6: Final answer
    x = 5,486.32

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