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Finding the Fourth Proportional to 6,608.60, 9,912.91 and 1,678.23

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Solution

The fourth proportional to 6,608.60, 9,912.91 and 1,678.23 is: 2,517.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,608.60 : 9,912.91 = 1,678.23 : x
  2. Step 2: Convert to fraction form
    6,608.60/9,912.91 = 1,678.23/x
  3. Step 3: Cross multiply
    6,608.60x = 9,912.91 × 1,678.23
  4. Step 4: Simplify right side
    6,608.60x = 16,636,142.95
  5. Step 5: Solve for x
    x = 16,636,142.95/6,608.60
  6. Step 6: Final answer
    x = 2,517.35

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Half scale
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Double scale
Find fourth proportional to 6,609.60, 9,914.41 and 1,679.23
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.