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Finding the Fourth Proportional to 8,125.20, 11,212.20 and 4,588.20

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Solution

The fourth proportional to 8,125.20, 11,212.20 and 4,588.20 is: 6,331.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.20 : 11,212.20 = 4,588.20 : x
  2. Step 2: Convert to fraction form
    8,125.20/11,212.20 = 4,588.20/x
  3. Step 3: Cross multiply
    8,125.20x = 11,212.20 × 4,588.20
  4. Step 4: Simplify right side
    8,125.20x = 51,443,816.04
  5. Step 5: Solve for x
    x = 51,443,816.04/8,125.20
  6. Step 6: Final answer
    x = 6,331.39

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Half scale
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Double scale
Find fourth proportional to 8,126.20, 11,213.58 and 4,589.20
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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.