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Finding the Fourth Proportional to 9,163.59, 12,644.87 and 7,279.73

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Solution

The fourth proportional to 9,163.59, 12,644.87 and 7,279.73 is: 10,045.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,163.59 : 12,644.87 = 7,279.73 : x
  2. Step 2: Convert to fraction form
    9,163.59/12,644.87 = 7,279.73/x
  3. Step 3: Cross multiply
    9,163.59x = 12,644.87 × 7,279.73
  4. Step 4: Simplify right side
    9,163.59x = 92,051,239.49
  5. Step 5: Solve for x
    x = 92,051,239.49/9,163.59
  6. Step 6: Final answer
    x = 10,045.32

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Half scale
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Double scale
Find fourth proportional to 9,164.59, 12,646.25 and 7,280.73
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.