Home / 2,187.91-3,275.77-1,872.62

Finding the Fourth Proportional to 2,187.91, 3,275.77 and 1,872.62

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Solution

The fourth proportional to 2,187.91, 3,275.77 and 1,872.62 is: 2,803.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.91 : 3,275.77 = 1,872.62 : x
  2. Step 2: Convert to fraction form
    2,187.91/3,275.77 = 1,872.62/x
  3. Step 3: Cross multiply
    2,187.91x = 3,275.77 × 1,872.62
  4. Step 4: Simplify right side
    2,187.91x = 6,134,272.42
  5. Step 5: Solve for x
    x = 6,134,272.42/2,187.91
  6. Step 6: Final answer
    x = 2,803.71

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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.