Home / 7,229.15-9,975.45-4,042.12

Finding the Fourth Proportional to 7,229.15, 9,975.45 and 4,042.12

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Solution

The fourth proportional to 7,229.15, 9,975.45 and 4,042.12 is: 5,577.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,229.15 : 9,975.45 = 4,042.12 : x
  2. Step 2: Convert to fraction form
    7,229.15/9,975.45 = 4,042.12/x
  3. Step 3: Cross multiply
    7,229.15x = 9,975.45 × 4,042.12
  4. Step 4: Simplify right side
    7,229.15x = 40,321,932.79
  5. Step 5: Solve for x
    x = 40,321,932.79/7,229.15
  6. Step 6: Final answer
    x = 5,577.69

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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.