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Finding the Fourth Proportional to 10,641.91, 15,965.21 and 3,246.94

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Solution

The fourth proportional to 10,641.91, 15,965.21 and 3,246.94 is: 4,871.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,641.91 : 15,965.21 = 3,246.94 : x
  2. Step 2: Convert to fraction form
    10,641.91/15,965.21 = 3,246.94/x
  3. Step 3: Cross multiply
    10,641.91x = 15,965.21 × 3,246.94
  4. Step 4: Simplify right side
    10,641.91x = 51,838,078.96
  5. Step 5: Solve for x
    x = 51,838,078.96/10,641.91
  6. Step 6: Final answer
    x = 4,871.13

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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.