Home / 2,268.40-3,398.40-1,291.60

Finding the Fourth Proportional to 2,268.40, 3,398.40 and 1,291.60

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Solution

The fourth proportional to 2,268.40, 3,398.40 and 1,291.60 is: 1,935.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,268.40 : 3,398.40 = 1,291.60 : x
  2. Step 2: Convert to fraction form
    2,268.40/3,398.40 = 1,291.60/x
  3. Step 3: Cross multiply
    2,268.40x = 3,398.40 × 1,291.60
  4. Step 4: Simplify right side
    2,268.40x = 4,389,373.44
  5. Step 5: Solve for x
    x = 4,389,373.44/2,268.40
  6. Step 6: Final answer
    x = 1,935.01

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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.