Home / 3,021.96-4,162.08-2,990.40

Finding the Fourth Proportional to 3,021.96, 4,162.08 and 2,990.40

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Solution

The fourth proportional to 3,021.96, 4,162.08 and 2,990.40 is: 4,118.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,021.96 : 4,162.08 = 2,990.40 : x
  2. Step 2: Convert to fraction form
    3,021.96/4,162.08 = 2,990.40/x
  3. Step 3: Cross multiply
    3,021.96x = 4,162.08 × 2,990.40
  4. Step 4: Simplify right side
    3,021.96x = 12,446,284.03
  5. Step 5: Solve for x
    x = 12,446,284.03/3,021.96
  6. Step 6: Final answer
    x = 4,118.61

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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.