Home / 7,728.26-11,592.21-4,221.68

Finding the Fourth Proportional to 7,728.26, 11,592.21 and 4,221.68

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Solution

The fourth proportional to 7,728.26, 11,592.21 and 4,221.68 is: 6,332.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,728.26 : 11,592.21 = 4,221.68 : x
  2. Step 2: Convert to fraction form
    7,728.26/11,592.21 = 4,221.68/x
  3. Step 3: Cross multiply
    7,728.26x = 11,592.21 × 4,221.68
  4. Step 4: Simplify right side
    7,728.26x = 48,938,601.11
  5. Step 5: Solve for x
    x = 48,938,601.11/7,728.26
  6. Step 6: Final answer
    x = 6,332.42

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.