Home / 2,116.40-3,169.67-1,190.03

Finding the Fourth Proportional to 2,116.40, 3,169.67 and 1,190.03

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Solution

The fourth proportional to 2,116.40, 3,169.67 and 1,190.03 is: 1,782.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.40 : 3,169.67 = 1,190.03 : x
  2. Step 2: Convert to fraction form
    2,116.40/3,169.67 = 1,190.03/x
  3. Step 3: Cross multiply
    2,116.40x = 3,169.67 × 1,190.03
  4. Step 4: Simplify right side
    2,116.40x = 3,771,980.59
  5. Step 5: Solve for x
    x = 3,771,980.59/2,116.40
  6. Step 6: Final answer
    x = 1,782.27

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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.