Home / 3,872.34-5,343.66-2,103.90

Finding the Fourth Proportional to 3,872.34, 5,343.66 and 2,103.90

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Solution

The fourth proportional to 3,872.34, 5,343.66 and 2,103.90 is: 2,903.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,872.34 : 5,343.66 = 2,103.90 : x
  2. Step 2: Convert to fraction form
    3,872.34/5,343.66 = 2,103.90/x
  3. Step 3: Cross multiply
    3,872.34x = 5,343.66 × 2,103.90
  4. Step 4: Simplify right side
    3,872.34x = 11,242,526.27
  5. Step 5: Solve for x
    x = 11,242,526.27/3,872.34
  6. Step 6: Final answer
    x = 2,903.29

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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.