Home / 2,163.15-3,243.33-776.43

Finding the Fourth Proportional to 2,163.15, 3,243.33 and 776.43

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Solution

The fourth proportional to 2,163.15, 3,243.33 and 776.43 is: 1,164.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163.15 : 3,243.33 = 776.43 : x
  2. Step 2: Convert to fraction form
    2,163.15/3,243.33 = 776.43/x
  3. Step 3: Cross multiply
    2,163.15x = 3,243.33 × 776.43
  4. Step 4: Simplify right side
    2,163.15x = 2,518,218.71
  5. Step 5: Solve for x
    x = 2,518,218.71/2,163.15
  6. Step 6: Final answer
    x = 1,164.14

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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.