Home / 7,812.80-11,721.66-3,433.94

Finding the Fourth Proportional to 7,812.80, 11,721.66 and 3,433.94

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Solution

The fourth proportional to 7,812.80, 11,721.66 and 3,433.94 is: 5,151.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,812.80 : 11,721.66 = 3,433.94 : x
  2. Step 2: Convert to fraction form
    7,812.80/11,721.66 = 3,433.94/x
  3. Step 3: Cross multiply
    7,812.80x = 11,721.66 × 3,433.94
  4. Step 4: Simplify right side
    7,812.80x = 40,251,477.14
  5. Step 5: Solve for x
    x = 40,251,477.14/7,812.80
  6. Step 6: Final answer
    x = 5,151.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.