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Finding the Fourth Proportional to 5,220.66, 7,203.80 and 2,982.38

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Solution

The fourth proportional to 5,220.66, 7,203.80 and 2,982.38 is: 4,115.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220.66 : 7,203.80 = 2,982.38 : x
  2. Step 2: Convert to fraction form
    5,220.66/7,203.80 = 2,982.38/x
  3. Step 3: Cross multiply
    5,220.66x = 7,203.80 × 2,982.38
  4. Step 4: Simplify right side
    5,220.66x = 21,484,469.04
  5. Step 5: Solve for x
    x = 21,484,469.04/5,220.66
  6. Step 6: Final answer
    x = 4,115.28

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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.