Home / 2,986.19-4,122.66-1,994.75

Finding the Fourth Proportional to 2,986.19, 4,122.66 and 1,994.75

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Solution

The fourth proportional to 2,986.19, 4,122.66 and 1,994.75 is: 2,753.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.19 : 4,122.66 = 1,994.75 : x
  2. Step 2: Convert to fraction form
    2,986.19/4,122.66 = 1,994.75/x
  3. Step 3: Cross multiply
    2,986.19x = 4,122.66 × 1,994.75
  4. Step 4: Simplify right side
    2,986.19x = 8,223,676.04
  5. Step 5: Solve for x
    x = 8,223,676.04/2,986.19
  6. Step 6: Final answer
    x = 2,753.90

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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.