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Finding the Fourth Proportional to 7,223.29, 10,834.92 and 2,721.20

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Solution

The fourth proportional to 7,223.29, 10,834.92 and 2,721.20 is: 4,081.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,223.29 : 10,834.92 = 2,721.20 : x
  2. Step 2: Convert to fraction form
    7,223.29/10,834.92 = 2,721.20/x
  3. Step 3: Cross multiply
    7,223.29x = 10,834.92 × 2,721.20
  4. Step 4: Simplify right side
    7,223.29x = 29,483,930.13
  5. Step 5: Solve for x
    x = 29,483,930.13/7,223.29
  6. Step 6: Final answer
    x = 4,081.79

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1.5x scale

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.