Home / 7,209.14-10,809.32-2,821.46

Finding the Fourth Proportional to 7,209.14, 10,809.32 and 2,821.46

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Solution

The fourth proportional to 7,209.14, 10,809.32 and 2,821.46 is: 4,230.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,209.14 : 10,809.32 = 2,821.46 : x
  2. Step 2: Convert to fraction form
    7,209.14/10,809.32 = 2,821.46/x
  3. Step 3: Cross multiply
    7,209.14x = 10,809.32 × 2,821.46
  4. Step 4: Simplify right side
    7,209.14x = 30,498,064.01
  5. Step 5: Solve for x
    x = 30,498,064.01/7,209.14
  6. Step 6: Final answer
    x = 4,230.47

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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.