Home / 3,561.12-4,914-2,161.44

Finding the Fourth Proportional to 3,561.12, 4,914 and 2,161.44

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Solution

The fourth proportional to 3,561.12, 4,914 and 2,161.44 is: 2,982.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,561.12 : 4,914 = 2,161.44 : x
  2. Step 2: Convert to fraction form
    3,561.12/4,914 = 2,161.44/x
  3. Step 3: Cross multiply
    3,561.12x = 4,914 × 2,161.44
  4. Step 4: Simplify right side
    3,561.12x = 10,621,316.16
  5. Step 5: Solve for x
    x = 10,621,316.16/3,561.12
  6. Step 6: Final answer
    x = 2,982.58

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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.