Home / 9,189.38-12,681.44-4,997.72

Finding the Fourth Proportional to 9,189.38, 12,681.44 and 4,997.72

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Solution

The fourth proportional to 9,189.38, 12,681.44 and 4,997.72 is: 6,896.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,189.38 : 12,681.44 = 4,997.72 : x
  2. Step 2: Convert to fraction form
    9,189.38/12,681.44 = 4,997.72/x
  3. Step 3: Cross multiply
    9,189.38x = 12,681.44 × 4,997.72
  4. Step 4: Simplify right side
    9,189.38x = 63,378,197.92
  5. Step 5: Solve for x
    x = 63,378,197.92/9,189.38
  6. Step 6: Final answer
    x = 6,896.90

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Half scale
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Double scale
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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.