Home / 2,108.33-2,909.39-1,223.99

Finding the Fourth Proportional to 2,108.33, 2,909.39 and 1,223.99

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Solution

The fourth proportional to 2,108.33, 2,909.39 and 1,223.99 is: 1,689.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.33 : 2,909.39 = 1,223.99 : x
  2. Step 2: Convert to fraction form
    2,108.33/2,909.39 = 1,223.99/x
  3. Step 3: Cross multiply
    2,108.33x = 2,909.39 × 1,223.99
  4. Step 4: Simplify right side
    2,108.33x = 3,561,043.60
  5. Step 5: Solve for x
    x = 3,561,043.60/2,108.33
  6. Step 6: Final answer
    x = 1,689.04

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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.