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Finding the Fourth Proportional to 3,913.03, 5,399.74 and 2,398.87

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Solution

The fourth proportional to 3,913.03, 5,399.74 and 2,398.87 is: 3,310.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.03 : 5,399.74 = 2,398.87 : x
  2. Step 2: Convert to fraction form
    3,913.03/5,399.74 = 2,398.87/x
  3. Step 3: Cross multiply
    3,913.03x = 5,399.74 × 2,398.87
  4. Step 4: Simplify right side
    3,913.03x = 12,953,274.29
  5. Step 5: Solve for x
    x = 12,953,274.29/3,913.03
  6. Step 6: Final answer
    x = 3,310.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.