Home / 2,142.36-2,955.96-1,396.44

Finding the Fourth Proportional to 2,142.36, 2,955.96 and 1,396.44

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Solution

The fourth proportional to 2,142.36, 2,955.96 and 1,396.44 is: 1,926.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142.36 : 2,955.96 = 1,396.44 : x
  2. Step 2: Convert to fraction form
    2,142.36/2,955.96 = 1,396.44/x
  3. Step 3: Cross multiply
    2,142.36x = 2,955.96 × 1,396.44
  4. Step 4: Simplify right side
    2,142.36x = 4,127,820.78
  5. Step 5: Solve for x
    x = 4,127,820.78/2,142.36
  6. Step 6: Final answer
    x = 1,926.76

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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.