Home / 3,871.65-5,342.91-2,103.27

Finding the Fourth Proportional to 3,871.65, 5,342.91 and 2,103.27

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Solution

The fourth proportional to 3,871.65, 5,342.91 and 2,103.27 is: 2,902.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.65 : 5,342.91 = 2,103.27 : x
  2. Step 2: Convert to fraction form
    3,871.65/5,342.91 = 2,103.27/x
  3. Step 3: Cross multiply
    3,871.65x = 5,342.91 × 2,103.27
  4. Step 4: Simplify right side
    3,871.65x = 11,237,566.22
  5. Step 5: Solve for x
    x = 11,237,566.22/3,871.65
  6. Step 6: Final answer
    x = 2,902.53

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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.