Home / 1,322.24-1,995.20-1,268.96

Finding the Fourth Proportional to 1,322.24, 1,995.20 and 1,268.96

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Solution

The fourth proportional to 1,322.24, 1,995.20 and 1,268.96 is: 1,914.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322.24 : 1,995.20 = 1,268.96 : x
  2. Step 2: Convert to fraction form
    1,322.24/1,995.20 = 1,268.96/x
  3. Step 3: Cross multiply
    1,322.24x = 1,995.20 × 1,268.96
  4. Step 4: Simplify right side
    1,322.24x = 2,531,828.99
  5. Step 5: Solve for x
    x = 2,531,828.99/1,322.24
  6. Step 6: Final answer
    x = 1,914.80

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.