Home / 3,886.28-5,832.16-2,109.36

Finding the Fourth Proportional to 3,886.28, 5,832.16 and 2,109.36

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Solution

The fourth proportional to 3,886.28, 5,832.16 and 2,109.36 is: 3,165.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.28 : 5,832.16 = 2,109.36 : x
  2. Step 2: Convert to fraction form
    3,886.28/5,832.16 = 2,109.36/x
  3. Step 3: Cross multiply
    3,886.28x = 5,832.16 × 2,109.36
  4. Step 4: Simplify right side
    3,886.28x = 12,302,125.02
  5. Step 5: Solve for x
    x = 12,302,125.02/3,886.28
  6. Step 6: Final answer
    x = 3,165.53

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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.