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Finding the Fourth Proportional to 2,377.28, 3,564.90 and 817.44

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Solution

The fourth proportional to 2,377.28, 3,564.90 and 817.44 is: 1,225.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,377.28 : 3,564.90 = 817.44 : x
  2. Step 2: Convert to fraction form
    2,377.28/3,564.90 = 817.44/x
  3. Step 3: Cross multiply
    2,377.28x = 3,564.90 × 817.44
  4. Step 4: Simplify right side
    2,377.28x = 2,914,091.86
  5. Step 5: Solve for x
    x = 2,914,091.86/2,377.28
  6. Step 6: Final answer
    x = 1,225.81

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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.