Home / 3,891.36-5,368.90-2,212.53

Finding the Fourth Proportional to 3,891.36, 5,368.90 and 2,212.53

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Solution

The fourth proportional to 3,891.36, 5,368.90 and 2,212.53 is: 3,052.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.36 : 5,368.90 = 2,212.53 : x
  2. Step 2: Convert to fraction form
    3,891.36/5,368.90 = 2,212.53/x
  3. Step 3: Cross multiply
    3,891.36x = 5,368.90 × 2,212.53
  4. Step 4: Simplify right side
    3,891.36x = 11,878,861.00
  5. Step 5: Solve for x
    x = 11,878,861.00/3,891.36
  6. Step 6: Final answer
    x = 3,052.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.