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Finding the Fourth Proportional to 2,513.36, 3,770.02 and 639.26

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Solution

The fourth proportional to 2,513.36, 3,770.02 and 639.26 is: 958.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,513.36 : 3,770.02 = 639.26 : x
  2. Step 2: Convert to fraction form
    2,513.36/3,770.02 = 639.26/x
  3. Step 3: Cross multiply
    2,513.36x = 3,770.02 × 639.26
  4. Step 4: Simplify right side
    2,513.36x = 2,410,001.34
  5. Step 5: Solve for x
    x = 2,410,001.34/2,513.36
  6. Step 6: Final answer
    x = 958.88

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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.