Home / 3,877.65-5,351.18-2,109.29

Finding the Fourth Proportional to 3,877.65, 5,351.18 and 2,109.29

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Solution

The fourth proportional to 3,877.65, 5,351.18 and 2,109.29 is: 2,910.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,877.65 : 5,351.18 = 2,109.29 : x
  2. Step 2: Convert to fraction form
    3,877.65/5,351.18 = 2,109.29/x
  3. Step 3: Cross multiply
    3,877.65x = 5,351.18 × 2,109.29
  4. Step 4: Simplify right side
    3,877.65x = 11,287,153.16
  5. Step 5: Solve for x
    x = 11,287,153.16/3,877.65
  6. Step 6: Final answer
    x = 2,910.82

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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.