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Finding the Fourth Proportional to 3,517.79, 5,274.92 and 1,296.51

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Solution

The fourth proportional to 3,517.79, 5,274.92 and 1,296.51 is: 1,944.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,517.79 : 5,274.92 = 1,296.51 : x
  2. Step 2: Convert to fraction form
    3,517.79/5,274.92 = 1,296.51/x
  3. Step 3: Cross multiply
    3,517.79x = 5,274.92 × 1,296.51
  4. Step 4: Simplify right side
    3,517.79x = 6,838,980.05
  5. Step 5: Solve for x
    x = 6,838,980.05/3,517.79
  6. Step 6: Final answer
    x = 1,944.12

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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.