Home / 2,115.96-3,168.46-1,880.88

Finding the Fourth Proportional to 2,115.96, 3,168.46 and 1,880.88

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Solution

The fourth proportional to 2,115.96, 3,168.46 and 1,880.88 is: 2,816.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.96 : 3,168.46 = 1,880.88 : x
  2. Step 2: Convert to fraction form
    2,115.96/3,168.46 = 1,880.88/x
  3. Step 3: Cross multiply
    2,115.96x = 3,168.46 × 1,880.88
  4. Step 4: Simplify right side
    2,115.96x = 5,959,493.04
  5. Step 5: Solve for x
    x = 5,959,493.04/2,115.96
  6. Step 6: Final answer
    x = 2,816.45

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1.5x scale

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.