Home / 2,753.78-4,120.31-1,639.08

Finding the Fourth Proportional to 2,753.78, 4,120.31 and 1,639.08

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Solution

The fourth proportional to 2,753.78, 4,120.31 and 1,639.08 is: 2,452.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,753.78 : 4,120.31 = 1,639.08 : x
  2. Step 2: Convert to fraction form
    2,753.78/4,120.31 = 1,639.08/x
  3. Step 3: Cross multiply
    2,753.78x = 4,120.31 × 1,639.08
  4. Step 4: Simplify right side
    2,753.78x = 6,753,509.52
  5. Step 5: Solve for x
    x = 6,753,509.52/2,753.78
  6. Step 6: Final answer
    x = 2,452.46

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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.