Home / 7,229.15-9,976.46-3,999.02

Finding the Fourth Proportional to 7,229.15, 9,976.46 and 3,999.02

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Solution

The fourth proportional to 7,229.15, 9,976.46 and 3,999.02 is: 5,518.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,229.15 : 9,976.46 = 3,999.02 : x
  2. Step 2: Convert to fraction form
    7,229.15/9,976.46 = 3,999.02/x
  3. Step 3: Cross multiply
    7,229.15x = 9,976.46 × 3,999.02
  4. Step 4: Simplify right side
    7,229.15x = 39,896,023.18
  5. Step 5: Solve for x
    x = 39,896,023.18/7,229.15
  6. Step 6: Final answer
    x = 5,518.77

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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.