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Finding the Fourth Proportional to 6,626.49, 9,939.75 and 3,113.92

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Solution

The fourth proportional to 6,626.49, 9,939.75 and 3,113.92 is: 4,670.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,626.49 : 9,939.75 = 3,113.92 : x
  2. Step 2: Convert to fraction form
    6,626.49/9,939.75 = 3,113.92/x
  3. Step 3: Cross multiply
    6,626.49x = 9,939.75 × 3,113.92
  4. Step 4: Simplify right side
    6,626.49x = 30,951,615.02
  5. Step 5: Solve for x
    x = 30,951,615.02/6,626.49
  6. Step 6: Final answer
    x = 4,670.89

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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.