Home / 3,979.15-5,970.75-1,640.95

Finding the Fourth Proportional to 3,979.15, 5,970.75 and 1,640.95

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Solution

The fourth proportional to 3,979.15, 5,970.75 and 1,640.95 is: 2,462.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.15 : 5,970.75 = 1,640.95 : x
  2. Step 2: Convert to fraction form
    3,979.15/5,970.75 = 1,640.95/x
  3. Step 3: Cross multiply
    3,979.15x = 5,970.75 × 1,640.95
  4. Step 4: Simplify right side
    3,979.15x = 9,797,702.21
  5. Step 5: Solve for x
    x = 9,797,702.21/3,979.15
  6. Step 6: Final answer
    x = 2,462.26

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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.