Home / 3,470.19-5,205.36-1,391.18

Finding the Fourth Proportional to 3,470.19, 5,205.36 and 1,391.18

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Solution

The fourth proportional to 3,470.19, 5,205.36 and 1,391.18 is: 2,086.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,470.19 : 5,205.36 = 1,391.18 : x
  2. Step 2: Convert to fraction form
    3,470.19/5,205.36 = 1,391.18/x
  3. Step 3: Cross multiply
    3,470.19x = 5,205.36 × 1,391.18
  4. Step 4: Simplify right side
    3,470.19x = 7,241,571.91
  5. Step 5: Solve for x
    x = 7,241,571.91/3,470.19
  6. Step 6: Final answer
    x = 2,086.79

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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.