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Finding the Fourth Proportional to 3,375.66, 5,055.66 and 1,986.24

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Solution

The fourth proportional to 3,375.66, 5,055.66 and 1,986.24 is: 2,974.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,375.66 : 5,055.66 = 1,986.24 : x
  2. Step 2: Convert to fraction form
    3,375.66/5,055.66 = 1,986.24/x
  3. Step 3: Cross multiply
    3,375.66x = 5,055.66 × 1,986.24
  4. Step 4: Simplify right side
    3,375.66x = 10,041,754.12
  5. Step 5: Solve for x
    x = 10,041,754.12/3,375.66
  6. Step 6: Final answer
    x = 2,974.75

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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.