Home / 7,150.12-10,721.77-2,219.81

Finding the Fourth Proportional to 7,150.12, 10,721.77 and 2,219.81

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Solution

The fourth proportional to 7,150.12, 10,721.77 and 2,219.81 is: 3,328.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,150.12 : 10,721.77 = 2,219.81 : x
  2. Step 2: Convert to fraction form
    7,150.12/10,721.77 = 2,219.81/x
  3. Step 3: Cross multiply
    7,150.12x = 10,721.77 × 2,219.81
  4. Step 4: Simplify right side
    7,150.12x = 23,800,233.11
  5. Step 5: Solve for x
    x = 23,800,233.11/7,150.12
  6. Step 6: Final answer
    x = 3,328.65

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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.