Home / 2,195.43-3,029.66-1,311.07

Finding the Fourth Proportional to 2,195.43, 3,029.66 and 1,311.07

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Solution

The fourth proportional to 2,195.43, 3,029.66 and 1,311.07 is: 1,809.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,195.43 : 3,029.66 = 1,311.07 : x
  2. Step 2: Convert to fraction form
    2,195.43/3,029.66 = 1,311.07/x
  3. Step 3: Cross multiply
    2,195.43x = 3,029.66 × 1,311.07
  4. Step 4: Simplify right side
    2,195.43x = 3,972,074.63
  5. Step 5: Solve for x
    x = 3,972,074.63/2,195.43
  6. Step 6: Final answer
    x = 1,809.25

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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.