Home / 2,317.21-3,474.29-855.56

Finding the Fourth Proportional to 2,317.21, 3,474.29 and 855.56

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Solution

The fourth proportional to 2,317.21, 3,474.29 and 855.56 is: 1,282.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,317.21 : 3,474.29 = 855.56 : x
  2. Step 2: Convert to fraction form
    2,317.21/3,474.29 = 855.56/x
  3. Step 3: Cross multiply
    2,317.21x = 3,474.29 × 855.56
  4. Step 4: Simplify right side
    2,317.21x = 2,972,474.38
  5. Step 5: Solve for x
    x = 2,972,474.38/2,317.21
  6. Step 6: Final answer
    x = 1,282.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.