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Finding the Fourth Proportional to 3,516, 5,274.56 and 1,324.88

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Solution

The fourth proportional to 3,516, 5,274.56 and 1,324.88 is: 1,987.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,516 : 5,274.56 = 1,324.88 : x
  2. Step 2: Convert to fraction form
    3,516/5,274.56 = 1,324.88/x
  3. Step 3: Cross multiply
    3,516x = 5,274.56 × 1,324.88
  4. Step 4: Simplify right side
    3,516x = 6,988,159.05
  5. Step 5: Solve for x
    x = 6,988,159.05/3,516
  6. Step 6: Final answer
    x = 1,987.53

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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.