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Finding the Fourth Proportional to 6,649.93, 9,974.99 and 3,186.37

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Solution

The fourth proportional to 6,649.93, 9,974.99 and 3,186.37 is: 4,779.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,649.93 : 9,974.99 = 3,186.37 : x
  2. Step 2: Convert to fraction form
    6,649.93/9,974.99 = 3,186.37/x
  3. Step 3: Cross multiply
    6,649.93x = 9,974.99 × 3,186.37
  4. Step 4: Simplify right side
    6,649.93x = 31,784,008.89
  5. Step 5: Solve for x
    x = 31,784,008.89/6,649.93
  6. Step 6: Final answer
    x = 4,779.60

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