Home / 3,872.32-5,343.81-2,103.95

Finding the Fourth Proportional to 3,872.32, 5,343.81 and 2,103.95

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Solution

The fourth proportional to 3,872.32, 5,343.81 and 2,103.95 is: 2,903.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,872.32 : 5,343.81 = 2,103.95 : x
  2. Step 2: Convert to fraction form
    3,872.32/5,343.81 = 2,103.95/x
  3. Step 3: Cross multiply
    3,872.32x = 5,343.81 × 2,103.95
  4. Step 4: Simplify right side
    3,872.32x = 11,243,109.05
  5. Step 5: Solve for x
    x = 11,243,109.05/3,872.32
  6. Step 6: Final answer
    x = 2,903.46

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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.