Home / 2,161.96-2,983.44-1,217.80

Finding the Fourth Proportional to 2,161.96, 2,983.44 and 1,217.80

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Solution

The fourth proportional to 2,161.96, 2,983.44 and 1,217.80 is: 1,680.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.96 : 2,983.44 = 1,217.80 : x
  2. Step 2: Convert to fraction form
    2,161.96/2,983.44 = 1,217.80/x
  3. Step 3: Cross multiply
    2,161.96x = 2,983.44 × 1,217.80
  4. Step 4: Simplify right side
    2,161.96x = 3,633,233.23
  5. Step 5: Solve for x
    x = 3,633,233.23/2,161.96
  6. Step 6: Final answer
    x = 1,680.53

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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.