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Finding the Fourth Proportional to 6,649.40, 9,974.10 and 5,094.20

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Solution

The fourth proportional to 6,649.40, 9,974.10 and 5,094.20 is: 7,641.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,649.40 : 9,974.10 = 5,094.20 : x
  2. Step 2: Convert to fraction form
    6,649.40/9,974.10 = 5,094.20/x
  3. Step 3: Cross multiply
    6,649.40x = 9,974.10 × 5,094.20
  4. Step 4: Simplify right side
    6,649.40x = 50,810,060.22
  5. Step 5: Solve for x
    x = 50,810,060.22/6,649.40
  6. Step 6: Final answer
    x = 7,641.30

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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.