Home / 3,910.40-5,396.43-2,142.01

Finding the Fourth Proportional to 3,910.40, 5,396.43 and 2,142.01

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Solution

The fourth proportional to 3,910.40, 5,396.43 and 2,142.01 is: 2,956.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.40 : 5,396.43 = 2,142.01 : x
  2. Step 2: Convert to fraction form
    3,910.40/5,396.43 = 2,142.01/x
  3. Step 3: Cross multiply
    3,910.40x = 5,396.43 × 2,142.01
  4. Step 4: Simplify right side
    3,910.40x = 11,559,193.53
  5. Step 5: Solve for x
    x = 11,559,193.53/3,910.40
  6. Step 6: Final answer
    x = 2,956.01

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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.