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Finding the Fourth Proportional to 2,154.47, 3,227.87 and 902.30

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Solution

The fourth proportional to 2,154.47, 3,227.87 and 902.30 is: 1,351.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.47 : 3,227.87 = 902.30 : x
  2. Step 2: Convert to fraction form
    2,154.47/3,227.87 = 902.30/x
  3. Step 3: Cross multiply
    2,154.47x = 3,227.87 × 902.30
  4. Step 4: Simplify right side
    2,154.47x = 2,912,507.10
  5. Step 5: Solve for x
    x = 2,912,507.10/2,154.47
  6. Step 6: Final answer
    x = 1,351.84

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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.