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Finding the Fourth Proportional to 6,242.05, 8,612.76 and 3,974.30

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Solution

The fourth proportional to 6,242.05, 8,612.76 and 3,974.30 is: 5,483.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,242.05 : 8,612.76 = 3,974.30 : x
  2. Step 2: Convert to fraction form
    6,242.05/8,612.76 = 3,974.30/x
  3. Step 3: Cross multiply
    6,242.05x = 8,612.76 × 3,974.30
  4. Step 4: Simplify right side
    6,242.05x = 34,229,692.07
  5. Step 5: Solve for x
    x = 34,229,692.07/6,242.05
  6. Step 6: Final answer
    x = 5,483.73

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