Home / 7,229.12-9,976.38-4,085.24

Finding the Fourth Proportional to 7,229.12, 9,976.38 and 4,085.24

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Solution

The fourth proportional to 7,229.12, 9,976.38 and 4,085.24 is: 5,637.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,229.12 : 9,976.38 = 4,085.24 : x
  2. Step 2: Convert to fraction form
    7,229.12/9,976.38 = 4,085.24/x
  3. Step 3: Cross multiply
    7,229.12x = 9,976.38 × 4,085.24
  4. Step 4: Simplify right side
    7,229.12x = 40,755,906.63
  5. Step 5: Solve for x
    x = 40,755,906.63/7,229.12
  6. Step 6: Final answer
    x = 5,637.74

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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.