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Finding the Fourth Proportional to 3,385.97, 5,079 and 1,045.95

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Solution

The fourth proportional to 3,385.97, 5,079 and 1,045.95 is: 1,568.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,385.97 : 5,079 = 1,045.95 : x
  2. Step 2: Convert to fraction form
    3,385.97/5,079 = 1,045.95/x
  3. Step 3: Cross multiply
    3,385.97x = 5,079 × 1,045.95
  4. Step 4: Simplify right side
    3,385.97x = 5,312,354.66
  5. Step 5: Solve for x
    x = 5,312,354.66/3,385.97
  6. Step 6: Final answer
    x = 1,568.93

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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.