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Finding the Fourth Proportional to 5,227.31, 7,203.72 and 5,131.23

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Solution

The fourth proportional to 5,227.31, 7,203.72 and 5,131.23 is: 7,071.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,227.31 : 7,203.72 = 5,131.23 : x
  2. Step 2: Convert to fraction form
    5,227.31/7,203.72 = 5,131.23/x
  3. Step 3: Cross multiply
    5,227.31x = 7,203.72 × 5,131.23
  4. Step 4: Simplify right side
    5,227.31x = 36,963,949.91
  5. Step 5: Solve for x
    x = 36,963,949.91/5,227.31
  6. Step 6: Final answer
    x = 7,071.32

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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.