Home / 3,108.43-4,289.63-1,711.18

Finding the Fourth Proportional to 3,108.43, 4,289.63 and 1,711.18

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Solution

The fourth proportional to 3,108.43, 4,289.63 and 1,711.18 is: 2,361.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.43 : 4,289.63 = 1,711.18 : x
  2. Step 2: Convert to fraction form
    3,108.43/4,289.63 = 1,711.18/x
  3. Step 3: Cross multiply
    3,108.43x = 4,289.63 × 1,711.18
  4. Step 4: Simplify right side
    3,108.43x = 7,340,307.62
  5. Step 5: Solve for x
    x = 7,340,307.62/3,108.43
  6. Step 6: Final answer
    x = 2,361.42

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1.5x scale

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.