Home / 3,561.33-4,913.67-1,989.39

Finding the Fourth Proportional to 3,561.33, 4,913.67 and 1,989.39

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Solution

The fourth proportional to 3,561.33, 4,913.67 and 1,989.39 is: 2,744.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,561.33 : 4,913.67 = 1,989.39 : x
  2. Step 2: Convert to fraction form
    3,561.33/4,913.67 = 1,989.39/x
  3. Step 3: Cross multiply
    3,561.33x = 4,913.67 × 1,989.39
  4. Step 4: Simplify right side
    3,561.33x = 9,775,205.96
  5. Step 5: Solve for x
    x = 9,775,205.96/3,561.33
  6. Step 6: Final answer
    x = 2,744.82

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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.