Home / 1,571.46-2,355.48-839.22

Finding the Fourth Proportional to 1,571.46, 2,355.48 and 839.22

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Solution

The fourth proportional to 1,571.46, 2,355.48 and 839.22 is: 1,257.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.46 : 2,355.48 = 839.22 : x
  2. Step 2: Convert to fraction form
    1,571.46/2,355.48 = 839.22/x
  3. Step 3: Cross multiply
    1,571.46x = 2,355.48 × 839.22
  4. Step 4: Simplify right side
    1,571.46x = 1,976,765.93
  5. Step 5: Solve for x
    x = 1,976,765.93/1,571.46
  6. Step 6: Final answer
    x = 1,257.92

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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.