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Finding the Fourth Proportional to 5,644.86, 7,789.98 and 3,287.22

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Solution

The fourth proportional to 5,644.86, 7,789.98 and 3,287.22 is: 4,536.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,644.86 : 7,789.98 = 3,287.22 : x
  2. Step 2: Convert to fraction form
    5,644.86/7,789.98 = 3,287.22/x
  3. Step 3: Cross multiply
    5,644.86x = 7,789.98 × 3,287.22
  4. Step 4: Simplify right side
    5,644.86x = 25,607,378.06
  5. Step 5: Solve for x
    x = 25,607,378.06/5,644.86
  6. Step 6: Final answer
    x = 4,536.41

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Half scale
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Double scale
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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.