Home / 2,986.94-4,122.44-2,150.42

Finding the Fourth Proportional to 2,986.94, 4,122.44 and 2,150.42

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Solution

The fourth proportional to 2,986.94, 4,122.44 and 2,150.42 is: 2,967.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.94 : 4,122.44 = 2,150.42 : x
  2. Step 2: Convert to fraction form
    2,986.94/4,122.44 = 2,150.42/x
  3. Step 3: Cross multiply
    2,986.94x = 4,122.44 × 2,150.42
  4. Step 4: Simplify right side
    2,986.94x = 8,864,966.22
  5. Step 5: Solve for x
    x = 8,864,966.22/2,986.94
  6. Step 6: Final answer
    x = 2,967.91

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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.