Home / 2,206.85-3,042.48-1,890.75

Finding the Fourth Proportional to 2,206.85, 3,042.48 and 1,890.75

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Solution

The fourth proportional to 2,206.85, 3,042.48 and 1,890.75 is: 2,606.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,206.85 : 3,042.48 = 1,890.75 : x
  2. Step 2: Convert to fraction form
    2,206.85/3,042.48 = 1,890.75/x
  3. Step 3: Cross multiply
    2,206.85x = 3,042.48 × 1,890.75
  4. Step 4: Simplify right side
    2,206.85x = 5,752,559.81
  5. Step 5: Solve for x
    x = 5,752,559.81/2,206.85
  6. Step 6: Final answer
    x = 2,606.68

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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.