Home / 2,108.66-2,910.40-1,224.90

Finding the Fourth Proportional to 2,108.66, 2,910.40 and 1,224.90

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Solution

The fourth proportional to 2,108.66, 2,910.40 and 1,224.90 is: 1,690.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.66 : 2,910.40 = 1,224.90 : x
  2. Step 2: Convert to fraction form
    2,108.66/2,910.40 = 1,224.90/x
  3. Step 3: Cross multiply
    2,108.66x = 2,910.40 × 1,224.90
  4. Step 4: Simplify right side
    2,108.66x = 3,564,948.96
  5. Step 5: Solve for x
    x = 3,564,948.96/2,108.66
  6. Step 6: Final answer
    x = 1,690.62

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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.