Home / 2,689.97-3,711.83-1,571.18

Finding the Fourth Proportional to 2,689.97, 3,711.83 and 1,571.18

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Solution

The fourth proportional to 2,689.97, 3,711.83 and 1,571.18 is: 2,168.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.97 : 3,711.83 = 1,571.18 : x
  2. Step 2: Convert to fraction form
    2,689.97/3,711.83 = 1,571.18/x
  3. Step 3: Cross multiply
    2,689.97x = 3,711.83 × 1,571.18
  4. Step 4: Simplify right side
    2,689.97x = 5,831,926.64
  5. Step 5: Solve for x
    x = 5,831,926.64/2,689.97
  6. Step 6: Final answer
    x = 2,168.03

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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.