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Finding the Fourth Proportional to 2,447.28, 3,670.20 and 803.43

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Solution

The fourth proportional to 2,447.28, 3,670.20 and 803.43 is: 1,204.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,447.28 : 3,670.20 = 803.43 : x
  2. Step 2: Convert to fraction form
    2,447.28/3,670.20 = 803.43/x
  3. Step 3: Cross multiply
    2,447.28x = 3,670.20 × 803.43
  4. Step 4: Simplify right side
    2,447.28x = 2,948,748.79
  5. Step 5: Solve for x
    x = 2,948,748.79/2,447.28
  6. Step 6: Final answer
    x = 1,204.91

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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.