Home / 2,211.36-3,315.63-1,040.61

Finding the Fourth Proportional to 2,211.36, 3,315.63 and 1,040.61

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Solution

The fourth proportional to 2,211.36, 3,315.63 and 1,040.61 is: 1,560.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.36 : 3,315.63 = 1,040.61 : x
  2. Step 2: Convert to fraction form
    2,211.36/3,315.63 = 1,040.61/x
  3. Step 3: Cross multiply
    2,211.36x = 3,315.63 × 1,040.61
  4. Step 4: Simplify right side
    2,211.36x = 3,450,277.73
  5. Step 5: Solve for x
    x = 3,450,277.73/2,211.36
  6. Step 6: Final answer
    x = 1,560.25

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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.