Home / 2,786.46-3,844.68-1,890.32

Finding the Fourth Proportional to 2,786.46, 3,844.68 and 1,890.32

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Solution

The fourth proportional to 2,786.46, 3,844.68 and 1,890.32 is: 2,608.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.46 : 3,844.68 = 1,890.32 : x
  2. Step 2: Convert to fraction form
    2,786.46/3,844.68 = 1,890.32/x
  3. Step 3: Cross multiply
    2,786.46x = 3,844.68 × 1,890.32
  4. Step 4: Simplify right side
    2,786.46x = 7,267,681.44
  5. Step 5: Solve for x
    x = 7,267,681.44/2,786.46
  6. Step 6: Final answer
    x = 2,608.21

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Double scale
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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.