Home / 2,108.80-2,910.36-1,224.56

Finding the Fourth Proportional to 2,108.80, 2,910.36 and 1,224.56

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Solution

The fourth proportional to 2,108.80, 2,910.36 and 1,224.56 is: 1,690.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.80 : 2,910.36 = 1,224.56 : x
  2. Step 2: Convert to fraction form
    2,108.80/2,910.36 = 1,224.56/x
  3. Step 3: Cross multiply
    2,108.80x = 2,910.36 × 1,224.56
  4. Step 4: Simplify right side
    2,108.80x = 3,563,910.44
  5. Step 5: Solve for x
    x = 3,563,910.44/2,108.80
  6. Step 6: Final answer
    x = 1,690.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.