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Finding the Fourth Proportional to 6,240.38, 8,615.62 and 3,973

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Solution

The fourth proportional to 6,240.38, 8,615.62 and 3,973 is: 5,485.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,240.38 : 8,615.62 = 3,973 : x
  2. Step 2: Convert to fraction form
    6,240.38/8,615.62 = 3,973/x
  3. Step 3: Cross multiply
    6,240.38x = 8,615.62 × 3,973
  4. Step 4: Simplify right side
    6,240.38x = 34,229,858.26
  5. Step 5: Solve for x
    x = 34,229,858.26/6,240.38
  6. Step 6: Final answer
    x = 5,485.22

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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.