Home / 3,790.86-5,231.35-2,196.91

Finding the Fourth Proportional to 3,790.86, 5,231.35 and 2,196.91

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Solution

The fourth proportional to 3,790.86, 5,231.35 and 2,196.91 is: 3,031.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,790.86 : 5,231.35 = 2,196.91 : x
  2. Step 2: Convert to fraction form
    3,790.86/5,231.35 = 2,196.91/x
  3. Step 3: Cross multiply
    3,790.86x = 5,231.35 × 2,196.91
  4. Step 4: Simplify right side
    3,790.86x = 11,492,805.13
  5. Step 5: Solve for x
    x = 11,492,805.13/3,790.86
  6. Step 6: Final answer
    x = 3,031.71

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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.