Home / 5,161.62-7,740.47-2,198.19

Finding the Fourth Proportional to 5,161.62, 7,740.47 and 2,198.19

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Solution

The fourth proportional to 5,161.62, 7,740.47 and 2,198.19 is: 3,296.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.62 : 7,740.47 = 2,198.19 : x
  2. Step 2: Convert to fraction form
    5,161.62/7,740.47 = 2,198.19/x
  3. Step 3: Cross multiply
    5,161.62x = 7,740.47 × 2,198.19
  4. Step 4: Simplify right side
    5,161.62x = 17,015,012.76
  5. Step 5: Solve for x
    x = 17,015,012.76/5,161.62
  6. Step 6: Final answer
    x = 3,296.45

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1.5x scale

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.