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Finding the Fourth Proportional to 2,165.81, 3,250.13 and 867.38

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Solution

The fourth proportional to 2,165.81, 3,250.13 and 867.38 is: 1,301.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.81 : 3,250.13 = 867.38 : x
  2. Step 2: Convert to fraction form
    2,165.81/3,250.13 = 867.38/x
  3. Step 3: Cross multiply
    2,165.81x = 3,250.13 × 867.38
  4. Step 4: Simplify right side
    2,165.81x = 2,819,077.17
  5. Step 5: Solve for x
    x = 2,819,077.17/2,165.81
  6. Step 6: Final answer
    x = 1,301.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.