Home / 2,213.83-3,317.91-1,115.74

Finding the Fourth Proportional to 2,213.83, 3,317.91 and 1,115.74

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Solution

The fourth proportional to 2,213.83, 3,317.91 and 1,115.74 is: 1,672.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.83 : 3,317.91 = 1,115.74 : x
  2. Step 2: Convert to fraction form
    2,213.83/3,317.91 = 1,115.74/x
  3. Step 3: Cross multiply
    2,213.83x = 3,317.91 × 1,115.74
  4. Step 4: Simplify right side
    2,213.83x = 3,701,924.90
  5. Step 5: Solve for x
    x = 3,701,924.90/2,213.83
  6. Step 6: Final answer
    x = 1,672.18

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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.