Home / 9,126.72-12,588.48-8,383.20

Finding the Fourth Proportional to 9,126.72, 12,588.48 and 8,383.20

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Solution

The fourth proportional to 9,126.72, 12,588.48 and 8,383.20 is: 11,562.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,126.72 : 12,588.48 = 8,383.20 : x
  2. Step 2: Convert to fraction form
    9,126.72/12,588.48 = 8,383.20/x
  3. Step 3: Cross multiply
    9,126.72x = 12,588.48 × 8,383.20
  4. Step 4: Simplify right side
    9,126.72x = 105,531,745.54
  5. Step 5: Solve for x
    x = 105,531,745.54/9,126.72
  6. Step 6: Final answer
    x = 11,562.94

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Half scale
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Double scale
Find fourth proportional to 9,127.72, 12,589.86 and 8,384.20
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.