Home / 7,229.13-9,976.19-3,917.13

Finding the Fourth Proportional to 7,229.13, 9,976.19 and 3,917.13

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Solution

The fourth proportional to 7,229.13, 9,976.19 and 3,917.13 is: 5,405.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,229.13 : 9,976.19 = 3,917.13 : x
  2. Step 2: Convert to fraction form
    7,229.13/9,976.19 = 3,917.13/x
  3. Step 3: Cross multiply
    7,229.13x = 9,976.19 × 3,917.13
  4. Step 4: Simplify right side
    7,229.13x = 39,078,033.13
  5. Step 5: Solve for x
    x = 39,078,033.13/7,229.13
  6. Step 6: Final answer
    x = 5,405.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.