Home / 2,174.40-3,241.80-1,969.20

Finding the Fourth Proportional to 2,174.40, 3,241.80 and 1,969.20

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Solution

The fourth proportional to 2,174.40, 3,241.80 and 1,969.20 is: 2,935.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,174.40 : 3,241.80 = 1,969.20 : x
  2. Step 2: Convert to fraction form
    2,174.40/3,241.80 = 1,969.20/x
  3. Step 3: Cross multiply
    2,174.40x = 3,241.80 × 1,969.20
  4. Step 4: Simplify right side
    2,174.40x = 6,383,752.56
  5. Step 5: Solve for x
    x = 6,383,752.56/2,174.40
  6. Step 6: Final answer
    x = 2,935.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.