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Finding the Fourth Proportional to 7,989.98, 11,984.97 and 6,269.54

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Solution

The fourth proportional to 7,989.98, 11,984.97 and 6,269.54 is: 9,404.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.98 : 11,984.97 = 6,269.54 : x
  2. Step 2: Convert to fraction form
    7,989.98/11,984.97 = 6,269.54/x
  3. Step 3: Cross multiply
    7,989.98x = 11,984.97 × 6,269.54
  4. Step 4: Simplify right side
    7,989.98x = 75,140,248.81
  5. Step 5: Solve for x
    x = 75,140,248.81/7,989.98
  6. Step 6: Final answer
    x = 9,404.31

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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.