Home / 2,162.20-2,983.09-1,217.84

Finding the Fourth Proportional to 2,162.20, 2,983.09 and 1,217.84

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Solution

The fourth proportional to 2,162.20, 2,983.09 and 1,217.84 is: 1,680.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,162.20 : 2,983.09 = 1,217.84 : x
  2. Step 2: Convert to fraction form
    2,162.20/2,983.09 = 1,217.84/x
  3. Step 3: Cross multiply
    2,162.20x = 2,983.09 × 1,217.84
  4. Step 4: Simplify right side
    2,162.20x = 3,632,926.33
  5. Step 5: Solve for x
    x = 3,632,926.33/2,162.20
  6. Step 6: Final answer
    x = 1,680.20

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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.