Home / 2,991.42-4,129.09-2,046.86

Finding the Fourth Proportional to 2,991.42, 4,129.09 and 2,046.86

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Solution

The fourth proportional to 2,991.42, 4,129.09 and 2,046.86 is: 2,825.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.42 : 4,129.09 = 2,046.86 : x
  2. Step 2: Convert to fraction form
    2,991.42/4,129.09 = 2,046.86/x
  3. Step 3: Cross multiply
    2,991.42x = 4,129.09 × 2,046.86
  4. Step 4: Simplify right side
    2,991.42x = 8,451,648.51
  5. Step 5: Solve for x
    x = 8,451,648.51/2,991.42
  6. Step 6: Final answer
    x = 2,825.30

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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.