Home / 7,226.40-9,972-4,081.92

Finding the Fourth Proportional to 7,226.40, 9,972 and 4,081.92

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Solution

The fourth proportional to 7,226.40, 9,972 and 4,081.92 is: 5,632.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,226.40 : 9,972 = 4,081.92 : x
  2. Step 2: Convert to fraction form
    7,226.40/9,972 = 4,081.92/x
  3. Step 3: Cross multiply
    7,226.40x = 9,972 × 4,081.92
  4. Step 4: Simplify right side
    7,226.40x = 40,704,906.24
  5. Step 5: Solve for x
    x = 40,704,906.24/7,226.40
  6. Step 6: Final answer
    x = 5,632.81

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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.