Home / 2,108.86-2,909.31-1,269.09

Finding the Fourth Proportional to 2,108.86, 2,909.31 and 1,269.09

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Solution

The fourth proportional to 2,108.86, 2,909.31 and 1,269.09 is: 1,750.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.86 : 2,909.31 = 1,269.09 : x
  2. Step 2: Convert to fraction form
    2,108.86/2,909.31 = 1,269.09/x
  3. Step 3: Cross multiply
    2,108.86x = 2,909.31 × 1,269.09
  4. Step 4: Simplify right side
    2,108.86x = 3,692,163.47
  5. Step 5: Solve for x
    x = 3,692,163.47/2,108.86
  6. Step 6: Final answer
    x = 1,750.79

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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.