Home / 3,108.28-4,289.40-1,711

Finding the Fourth Proportional to 3,108.28, 4,289.40 and 1,711

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Solution

The fourth proportional to 3,108.28, 4,289.40 and 1,711 is: 2,361.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.28 : 4,289.40 = 1,711 : x
  2. Step 2: Convert to fraction form
    3,108.28/4,289.40 = 1,711/x
  3. Step 3: Cross multiply
    3,108.28x = 4,289.40 × 1,711
  4. Step 4: Simplify right side
    3,108.28x = 7,339,163.40
  5. Step 5: Solve for x
    x = 7,339,163.40/3,108.28
  6. Step 6: Final answer
    x = 2,361.17

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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.