Home / 2,783.78-3,837.62-1,720.83

Finding the Fourth Proportional to 2,783.78, 3,837.62 and 1,720.83

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Solution

The fourth proportional to 2,783.78, 3,837.62 and 1,720.83 is: 2,372.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,783.78 : 3,837.62 = 1,720.83 : x
  2. Step 2: Convert to fraction form
    2,783.78/3,837.62 = 1,720.83/x
  3. Step 3: Cross multiply
    2,783.78x = 3,837.62 × 1,720.83
  4. Step 4: Simplify right side
    2,783.78x = 6,603,891.62
  5. Step 5: Solve for x
    x = 6,603,891.62/2,783.78
  6. Step 6: Final answer
    x = 2,372.27

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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.