Home / 2,133.21-3,201.84-1,313.08

Finding the Fourth Proportional to 2,133.21, 3,201.84 and 1,313.08

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Solution

The fourth proportional to 2,133.21, 3,201.84 and 1,313.08 is: 1,970.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,133.21 : 3,201.84 = 1,313.08 : x
  2. Step 2: Convert to fraction form
    2,133.21/3,201.84 = 1,313.08/x
  3. Step 3: Cross multiply
    2,133.21x = 3,201.84 × 1,313.08
  4. Step 4: Simplify right side
    2,133.21x = 4,204,272.07
  5. Step 5: Solve for x
    x = 4,204,272.07/2,133.21
  6. Step 6: Final answer
    x = 1,970.87

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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.