Home / 2,108.84-3,163.62-939.26

Finding the Fourth Proportional to 2,108.84, 3,163.62 and 939.26

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Solution

The fourth proportional to 2,108.84, 3,163.62 and 939.26 is: 1,409.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.84 : 3,163.62 = 939.26 : x
  2. Step 2: Convert to fraction form
    2,108.84/3,163.62 = 939.26/x
  3. Step 3: Cross multiply
    2,108.84x = 3,163.62 × 939.26
  4. Step 4: Simplify right side
    2,108.84x = 2,971,461.72
  5. Step 5: Solve for x
    x = 2,971,461.72/2,108.84
  6. Step 6: Final answer
    x = 1,409.05

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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.