Home / 1,990.22-2,986.93-1,169.19

Finding the Fourth Proportional to 1,990.22, 2,986.93 and 1,169.19

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Solution

The fourth proportional to 1,990.22, 2,986.93 and 1,169.19 is: 1,754.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.22 : 2,986.93 = 1,169.19 : x
  2. Step 2: Convert to fraction form
    1,990.22/2,986.93 = 1,169.19/x
  3. Step 3: Cross multiply
    1,990.22x = 2,986.93 × 1,169.19
  4. Step 4: Simplify right side
    1,990.22x = 3,492,281.22
  5. Step 5: Solve for x
    x = 3,492,281.22/1,990.22
  6. Step 6: Final answer
    x = 1,754.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.