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Finding the Fourth Proportional to 6,650.71, 9,178.62 and 3,998.06

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Solution

The fourth proportional to 6,650.71, 9,178.62 and 3,998.06 is: 5,517.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,650.71 : 9,178.62 = 3,998.06 : x
  2. Step 2: Convert to fraction form
    6,650.71/9,178.62 = 3,998.06/x
  3. Step 3: Cross multiply
    6,650.71x = 9,178.62 × 3,998.06
  4. Step 4: Simplify right side
    6,650.71x = 36,696,647.01
  5. Step 5: Solve for x
    x = 36,696,647.01/6,650.71
  6. Step 6: Final answer
    x = 5,517.71

Related Problems

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Half scale
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Double scale
Find fourth proportional to 6,651.71, 9,180 and 3,999.06
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.