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Finding the Fourth Proportional to 6,229.78, 9,299.09 and 5,491.66

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Solution

The fourth proportional to 6,229.78, 9,299.09 and 5,491.66 is: 8,197.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,229.78 : 9,299.09 = 5,491.66 : x
  2. Step 2: Convert to fraction form
    6,229.78/9,299.09 = 5,491.66/x
  3. Step 3: Cross multiply
    6,229.78x = 9,299.09 × 5,491.66
  4. Step 4: Simplify right side
    6,229.78x = 51,067,440.59
  5. Step 5: Solve for x
    x = 51,067,440.59/6,229.78
  6. Step 6: Final answer
    x = 8,197.31

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Find fourth proportional to 3,114.89, 4,649.55 and 2,745.83
Half scale
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Double scale
Find fourth proportional to 6,230.78, 9,300.58 and 5,492.66
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.