Home / 3,645.91-5,031.81-2,805.94

Finding the Fourth Proportional to 3,645.91, 5,031.81 and 2,805.94

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Solution

The fourth proportional to 3,645.91, 5,031.81 and 2,805.94 is: 3,872.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,645.91 : 5,031.81 = 2,805.94 : x
  2. Step 2: Convert to fraction form
    3,645.91/5,031.81 = 2,805.94/x
  3. Step 3: Cross multiply
    3,645.91x = 5,031.81 × 2,805.94
  4. Step 4: Simplify right side
    3,645.91x = 14,118,917.76
  5. Step 5: Solve for x
    x = 14,118,917.76/3,645.91
  6. Step 6: Final answer
    x = 3,872.54

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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.