Home / 2,213.77-3,317.91-1,118.44

Finding the Fourth Proportional to 2,213.77, 3,317.91 and 1,118.44

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Solution

The fourth proportional to 2,213.77, 3,317.91 and 1,118.44 is: 1,676.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.77 : 3,317.91 = 1,118.44 : x
  2. Step 2: Convert to fraction form
    2,213.77/3,317.91 = 1,118.44/x
  3. Step 3: Cross multiply
    2,213.77x = 3,317.91 × 1,118.44
  4. Step 4: Simplify right side
    2,213.77x = 3,710,883.26
  5. Step 5: Solve for x
    x = 3,710,883.26/2,213.77
  6. Step 6: Final answer
    x = 1,676.28

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1.5x scale

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.