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Finding the Fourth Proportional to 5,873.88, 8,105.64 and 3,221.40

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Solution

The fourth proportional to 5,873.88, 8,105.64 and 3,221.40 is: 4,445.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,873.88 : 8,105.64 = 3,221.40 : x
  2. Step 2: Convert to fraction form
    5,873.88/8,105.64 = 3,221.40/x
  3. Step 3: Cross multiply
    5,873.88x = 8,105.64 × 3,221.40
  4. Step 4: Simplify right side
    5,873.88x = 26,111,508.70
  5. Step 5: Solve for x
    x = 26,111,508.70/5,873.88
  6. Step 6: Final answer
    x = 4,445.36

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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.