Home / 3,078.81-4,250.07-2,135.97

Finding the Fourth Proportional to 3,078.81, 4,250.07 and 2,135.97

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Solution

The fourth proportional to 3,078.81, 4,250.07 and 2,135.97 is: 2,948.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.81 : 4,250.07 = 2,135.97 : x
  2. Step 2: Convert to fraction form
    3,078.81/4,250.07 = 2,135.97/x
  3. Step 3: Cross multiply
    3,078.81x = 4,250.07 × 2,135.97
  4. Step 4: Simplify right side
    3,078.81x = 9,078,022.02
  5. Step 5: Solve for x
    x = 9,078,022.02/3,078.81
  6. Step 6: Final answer
    x = 2,948.55

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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.