Home / 3,561.14-4,914.60-1,989.34

Finding the Fourth Proportional to 3,561.14, 4,914.60 and 1,989.34

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Solution

The fourth proportional to 3,561.14, 4,914.60 and 1,989.34 is: 2,745.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,561.14 : 4,914.60 = 1,989.34 : x
  2. Step 2: Convert to fraction form
    3,561.14/4,914.60 = 1,989.34/x
  3. Step 3: Cross multiply
    3,561.14x = 4,914.60 × 1,989.34
  4. Step 4: Simplify right side
    3,561.14x = 9,776,810.36
  5. Step 5: Solve for x
    x = 9,776,810.36/3,561.14
  6. Step 6: Final answer
    x = 2,745.42

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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.