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Finding the Fourth Proportional to 3,309.76, 4,966.61 and 1,229.95

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Solution

The fourth proportional to 3,309.76, 4,966.61 and 1,229.95 is: 1,845.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,309.76 : 4,966.61 = 1,229.95 : x
  2. Step 2: Convert to fraction form
    3,309.76/4,966.61 = 1,229.95/x
  3. Step 3: Cross multiply
    3,309.76x = 4,966.61 × 1,229.95
  4. Step 4: Simplify right side
    3,309.76x = 6,108,681.97
  5. Step 5: Solve for x
    x = 6,108,681.97/3,309.76
  6. Step 6: Final answer
    x = 1,845.66

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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.