Home / 2,212.02-3,315.87-1,344.78

Finding the Fourth Proportional to 2,212.02, 3,315.87 and 1,344.78

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Solution

The fourth proportional to 2,212.02, 3,315.87 and 1,344.78 is: 2,015.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.02 : 3,315.87 = 1,344.78 : x
  2. Step 2: Convert to fraction form
    2,212.02/3,315.87 = 1,344.78/x
  3. Step 3: Cross multiply
    2,212.02x = 3,315.87 × 1,344.78
  4. Step 4: Simplify right side
    2,212.02x = 4,459,115.66
  5. Step 5: Solve for x
    x = 4,459,115.66/2,212.02
  6. Step 6: Final answer
    x = 2,015.86

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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.