Home / 3,765.81-5,196.66-2,172.04

Finding the Fourth Proportional to 3,765.81, 5,196.66 and 2,172.04

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Solution

The fourth proportional to 3,765.81, 5,196.66 and 2,172.04 is: 2,997.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,765.81 : 5,196.66 = 2,172.04 : x
  2. Step 2: Convert to fraction form
    3,765.81/5,196.66 = 2,172.04/x
  3. Step 3: Cross multiply
    3,765.81x = 5,196.66 × 2,172.04
  4. Step 4: Simplify right side
    3,765.81x = 11,287,353.39
  5. Step 5: Solve for x
    x = 11,287,353.39/3,765.81
  6. Step 6: Final answer
    x = 2,997.32

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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.