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Finding the Fourth Proportional to 5,164.55, 7,127.07 and 2,806.73

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Solution

The fourth proportional to 5,164.55, 7,127.07 and 2,806.73 is: 3,873.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,164.55 : 7,127.07 = 2,806.73 : x
  2. Step 2: Convert to fraction form
    5,164.55/7,127.07 = 2,806.73/x
  3. Step 3: Cross multiply
    5,164.55x = 7,127.07 × 2,806.73
  4. Step 4: Simplify right side
    5,164.55x = 20,003,761.18
  5. Step 5: Solve for x
    x = 20,003,761.18/5,164.55
  6. Step 6: Final answer
    x = 3,873.28

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Half 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.