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Finding the Fourth Proportional to 5,208.62, 7,187.71 and 2,971.22

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Solution

The fourth proportional to 5,208.62, 7,187.71 and 2,971.22 is: 4,100.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,208.62 : 7,187.71 = 2,971.22 : x
  2. Step 2: Convert to fraction form
    5,208.62/7,187.71 = 2,971.22/x
  3. Step 3: Cross multiply
    5,208.62x = 7,187.71 × 2,971.22
  4. Step 4: Simplify right side
    5,208.62x = 21,356,244.47
  5. Step 5: Solve for x
    x = 21,356,244.47/5,208.62
  6. Step 6: Final answer
    x = 4,100.18

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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.