Home / 2,213.98-3,316.82-1,115.68

Finding the Fourth Proportional to 2,213.98, 3,316.82 and 1,115.68

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Solution

The fourth proportional to 2,213.98, 3,316.82 and 1,115.68 is: 1,671.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.98 : 3,316.82 = 1,115.68 : x
  2. Step 2: Convert to fraction form
    2,213.98/3,316.82 = 1,115.68/x
  3. Step 3: Cross multiply
    2,213.98x = 3,316.82 × 1,115.68
  4. Step 4: Simplify right side
    2,213.98x = 3,700,509.74
  5. Step 5: Solve for x
    x = 3,700,509.74/2,213.98
  6. Step 6: Final answer
    x = 1,671.43

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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.