Home / 2,040.78-2,815.19-1,293.42

Finding the Fourth Proportional to 2,040.78, 2,815.19 and 1,293.42

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Solution

The fourth proportional to 2,040.78, 2,815.19 and 1,293.42 is: 1,784.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,040.78 : 2,815.19 = 1,293.42 : x
  2. Step 2: Convert to fraction form
    2,040.78/2,815.19 = 1,293.42/x
  3. Step 3: Cross multiply
    2,040.78x = 2,815.19 × 1,293.42
  4. Step 4: Simplify right side
    2,040.78x = 3,641,216.58
  5. Step 5: Solve for x
    x = 3,641,216.58/2,040.78
  6. Step 6: Final answer
    x = 1,784.23

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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.