Home / 2,190.37-3,272.72-2,113.81

Finding the Fourth Proportional to 2,190.37, 3,272.72 and 2,113.81

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Solution

The fourth proportional to 2,190.37, 3,272.72 and 2,113.81 is: 3,158.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.37 : 3,272.72 = 2,113.81 : x
  2. Step 2: Convert to fraction form
    2,190.37/3,272.72 = 2,113.81/x
  3. Step 3: Cross multiply
    2,190.37x = 3,272.72 × 2,113.81
  4. Step 4: Simplify right side
    2,190.37x = 6,917,908.26
  5. Step 5: Solve for x
    x = 6,917,908.26/2,190.37
  6. Step 6: Final answer
    x = 3,158.33

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.