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Finding the Fourth Proportional to 6,651.95, 9,174.33 and 3,998.79

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Solution

The fourth proportional to 6,651.95, 9,174.33 and 3,998.79 is: 5,515.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,651.95 : 9,174.33 = 3,998.79 : x
  2. Step 2: Convert to fraction form
    6,651.95/9,174.33 = 3,998.79/x
  3. Step 3: Cross multiply
    6,651.95x = 9,174.33 × 3,998.79
  4. Step 4: Simplify right side
    6,651.95x = 36,686,219.06
  5. Step 5: Solve for x
    x = 36,686,219.06/6,651.95
  6. Step 6: Final answer
    x = 5,515.11

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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.