Home / 3,872.14-5,343.56-2,103.76

Finding the Fourth Proportional to 3,872.14, 5,343.56 and 2,103.76

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Solution

The fourth proportional to 3,872.14, 5,343.56 and 2,103.76 is: 2,903.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,872.14 : 5,343.56 = 2,103.76 : x
  2. Step 2: Convert to fraction form
    3,872.14/5,343.56 = 2,103.76/x
  3. Step 3: Cross multiply
    3,872.14x = 5,343.56 × 2,103.76
  4. Step 4: Simplify right side
    3,872.14x = 11,241,567.79
  5. Step 5: Solve for x
    x = 11,241,567.79/3,872.14
  6. Step 6: Final answer
    x = 2,903.19

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1.5x scale

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.