Home / 2,108.90-3,163.06-1,159.36

Finding the Fourth Proportional to 2,108.90, 3,163.06 and 1,159.36

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Solution

The fourth proportional to 2,108.90, 3,163.06 and 1,159.36 is: 1,738.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.90 : 3,163.06 = 1,159.36 : x
  2. Step 2: Convert to fraction form
    2,108.90/3,163.06 = 1,159.36/x
  3. Step 3: Cross multiply
    2,108.90x = 3,163.06 × 1,159.36
  4. Step 4: Simplify right side
    2,108.90x = 3,667,125.24
  5. Step 5: Solve for x
    x = 3,667,125.24/2,108.90
  6. Step 6: Final answer
    x = 1,738.88

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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.