Home / 2,872.50-3,964.53-2,172.66

Finding the Fourth Proportional to 2,872.50, 3,964.53 and 2,172.66

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Solution

The fourth proportional to 2,872.50, 3,964.53 and 2,172.66 is: 2,998.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,872.50 : 3,964.53 = 2,172.66 : x
  2. Step 2: Convert to fraction form
    2,872.50/3,964.53 = 2,172.66/x
  3. Step 3: Cross multiply
    2,872.50x = 3,964.53 × 2,172.66
  4. Step 4: Simplify right side
    2,872.50x = 8,613,575.75
  5. Step 5: Solve for x
    x = 8,613,575.75/2,872.50
  6. Step 6: Final answer
    x = 2,998.63

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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.