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Finding the Fourth Proportional to 6,963.49, 9,610.31 and 3,979.76

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Solution

The fourth proportional to 6,963.49, 9,610.31 and 3,979.76 is: 5,492.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,963.49 : 9,610.31 = 3,979.76 : x
  2. Step 2: Convert to fraction form
    6,963.49/9,610.31 = 3,979.76/x
  3. Step 3: Cross multiply
    6,963.49x = 9,610.31 × 3,979.76
  4. Step 4: Simplify right side
    6,963.49x = 38,246,674.30
  5. Step 5: Solve for x
    x = 38,246,674.30/6,963.49
  6. Step 6: Final answer
    x = 5,492.46

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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.