Home / 3,768.21-5,653.80-1,690.02

Finding the Fourth Proportional to 3,768.21, 5,653.80 and 1,690.02

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Solution

The fourth proportional to 3,768.21, 5,653.80 and 1,690.02 is: 2,535.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,768.21 : 5,653.80 = 1,690.02 : x
  2. Step 2: Convert to fraction form
    3,768.21/5,653.80 = 1,690.02/x
  3. Step 3: Cross multiply
    3,768.21x = 5,653.80 × 1,690.02
  4. Step 4: Simplify right side
    3,768.21x = 9,555,035.08
  5. Step 5: Solve for x
    x = 9,555,035.08/3,768.21
  6. Step 6: Final answer
    x = 2,535.70

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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.