Home / 2,133.36-3,200.04-1,268.40

Finding the Fourth Proportional to 2,133.36, 3,200.04 and 1,268.40

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Solution

The fourth proportional to 2,133.36, 3,200.04 and 1,268.40 is: 1,902.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,133.36 : 3,200.04 = 1,268.40 : x
  2. Step 2: Convert to fraction form
    2,133.36/3,200.04 = 1,268.40/x
  3. Step 3: Cross multiply
    2,133.36x = 3,200.04 × 1,268.40
  4. Step 4: Simplify right side
    2,133.36x = 4,058,930.74
  5. Step 5: Solve for x
    x = 4,058,930.74/2,133.36
  6. Step 6: Final answer
    x = 1,902.60

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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.