Home / 2,563.78-3,845.67-1,979.64

Finding the Fourth Proportional to 2,563.78, 3,845.67 and 1,979.64

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Solution

The fourth proportional to 2,563.78, 3,845.67 and 1,979.64 is: 2,969.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,563.78 : 3,845.67 = 1,979.64 : x
  2. Step 2: Convert to fraction form
    2,563.78/3,845.67 = 1,979.64/x
  3. Step 3: Cross multiply
    2,563.78x = 3,845.67 × 1,979.64
  4. Step 4: Simplify right side
    2,563.78x = 7,613,042.16
  5. Step 5: Solve for x
    x = 7,613,042.16/2,563.78
  6. Step 6: Final answer
    x = 2,969.46

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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.