Home / 2,241.36-3,091.80-1,989.48

Finding the Fourth Proportional to 2,241.36, 3,091.80 and 1,989.48

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Solution

The fourth proportional to 2,241.36, 3,091.80 and 1,989.48 is: 2,744.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,241.36 : 3,091.80 = 1,989.48 : x
  2. Step 2: Convert to fraction form
    2,241.36/3,091.80 = 1,989.48/x
  3. Step 3: Cross multiply
    2,241.36x = 3,091.80 × 1,989.48
  4. Step 4: Simplify right side
    2,241.36x = 6,151,074.26
  5. Step 5: Solve for x
    x = 6,151,074.26/2,241.36
  6. Step 6: Final answer
    x = 2,744.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.