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Finding the Fourth Proportional to 2,108.86, 3,163.30 and 722.24

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Solution

The fourth proportional to 2,108.86, 3,163.30 and 722.24 is: 1,083.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.86 : 3,163.30 = 722.24 : x
  2. Step 2: Convert to fraction form
    2,108.86/3,163.30 = 722.24/x
  3. Step 3: Cross multiply
    2,108.86x = 3,163.30 × 722.24
  4. Step 4: Simplify right side
    2,108.86x = 2,284,661.79
  5. Step 5: Solve for x
    x = 2,284,661.79/2,108.86
  6. Step 6: Final answer
    x = 1,083.36

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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.