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Finding the Fourth Proportional to 2,808, 4,214.28 and 2,399.76

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Solution

The fourth proportional to 2,808, 4,214.28 and 2,399.76 is: 3,601.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,808 : 4,214.28 = 2,399.76 : x
  2. Step 2: Convert to fraction form
    2,808/4,214.28 = 2,399.76/x
  3. Step 3: Cross multiply
    2,808x = 4,214.28 × 2,399.76
  4. Step 4: Simplify right side
    2,808x = 10,113,260.57
  5. Step 5: Solve for x
    x = 10,113,260.57/2,808
  6. Step 6: Final answer
    x = 3,601.59

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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.