Home / 2,108.08-3,161.57-626.90

Finding the Fourth Proportional to 2,108.08, 3,161.57 and 626.90

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Solution

The fourth proportional to 2,108.08, 3,161.57 and 626.90 is: 940.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.08 : 3,161.57 = 626.90 : x
  2. Step 2: Convert to fraction form
    2,108.08/3,161.57 = 626.90/x
  3. Step 3: Cross multiply
    2,108.08x = 3,161.57 × 626.90
  4. Step 4: Simplify right side
    2,108.08x = 1,982,003.16
  5. Step 5: Solve for x
    x = 1,982,003.16/2,108.08
  6. Step 6: Final answer
    x = 940.19

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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.