Home / 1,374.28-1,896.96-1,228.48

Finding the Fourth Proportional to 1,374.28, 1,896.96 and 1,228.48

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Solution

The fourth proportional to 1,374.28, 1,896.96 and 1,228.48 is: 1,695.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,374.28 : 1,896.96 = 1,228.48 : x
  2. Step 2: Convert to fraction form
    1,374.28/1,896.96 = 1,228.48/x
  3. Step 3: Cross multiply
    1,374.28x = 1,896.96 × 1,228.48
  4. Step 4: Simplify right side
    1,374.28x = 2,330,377.42
  5. Step 5: Solve for x
    x = 2,330,377.42/1,374.28
  6. Step 6: Final answer
    x = 1,695.71

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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.