Home / 2,205.35-3,290.91-1,971.66

Finding the Fourth Proportional to 2,205.35, 3,290.91 and 1,971.66

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Solution

The fourth proportional to 2,205.35, 3,290.91 and 1,971.66 is: 2,942.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,205.35 : 3,290.91 = 1,971.66 : x
  2. Step 2: Convert to fraction form
    2,205.35/3,290.91 = 1,971.66/x
  3. Step 3: Cross multiply
    2,205.35x = 3,290.91 × 1,971.66
  4. Step 4: Simplify right side
    2,205.35x = 6,488,555.61
  5. Step 5: Solve for x
    x = 6,488,555.61/2,205.35
  6. Step 6: Final answer
    x = 2,942.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.