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Finding the Fourth Proportional to 3,901.29, 5,851.93 and 979.59

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Solution

The fourth proportional to 3,901.29, 5,851.93 and 979.59 is: 1,469.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,901.29 : 5,851.93 = 979.59 : x
  2. Step 2: Convert to fraction form
    3,901.29/5,851.93 = 979.59/x
  3. Step 3: Cross multiply
    3,901.29x = 5,851.93 × 979.59
  4. Step 4: Simplify right side
    3,901.29x = 5,732,517.57
  5. Step 5: Solve for x
    x = 5,732,517.57/3,901.29
  6. Step 6: Final answer
    x = 1,469.39

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1.5x scale

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.