Home / 3,108.81-4,290.15-1,711.56

Finding the Fourth Proportional to 3,108.81, 4,290.15 and 1,711.56

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Solution

The fourth proportional to 3,108.81, 4,290.15 and 1,711.56 is: 2,361.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.81 : 4,290.15 = 1,711.56 : x
  2. Step 2: Convert to fraction form
    3,108.81/4,290.15 = 1,711.56/x
  3. Step 3: Cross multiply
    3,108.81x = 4,290.15 × 1,711.56
  4. Step 4: Simplify right side
    3,108.81x = 7,342,849.13
  5. Step 5: Solve for x
    x = 7,342,849.13/3,108.81
  6. Step 6: Final answer
    x = 2,361.95

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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.