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Finding the Fourth Proportional to 5,164.67, 7,127.16 and 2,806.76

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Solution

The fourth proportional to 5,164.67, 7,127.16 and 2,806.76 is: 3,873.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,164.67 : 7,127.16 = 2,806.76 : x
  2. Step 2: Convert to fraction form
    5,164.67/7,127.16 = 2,806.76/x
  3. Step 3: Cross multiply
    5,164.67x = 7,127.16 × 2,806.76
  4. Step 4: Simplify right side
    5,164.67x = 20,004,227.60
  5. Step 5: Solve for x
    x = 20,004,227.60/5,164.67
  6. Step 6: Final answer
    x = 3,873.28

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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.