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Finding the Fourth Proportional to 5,220.68, 7,204.86 and 2,863.16

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Solution

The fourth proportional to 5,220.68, 7,204.86 and 2,863.16 is: 3,951.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220.68 : 7,204.86 = 2,863.16 : x
  2. Step 2: Convert to fraction form
    5,220.68/7,204.86 = 2,863.16/x
  3. Step 3: Cross multiply
    5,220.68x = 7,204.86 × 2,863.16
  4. Step 4: Simplify right side
    5,220.68x = 20,628,666.96
  5. Step 5: Solve for x
    x = 20,628,666.96/5,220.68
  6. Step 6: Final answer
    x = 3,951.34

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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.