Home / 2,163.92-2,986.67-1,378.22

Finding the Fourth Proportional to 2,163.92, 2,986.67 and 1,378.22

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Solution

The fourth proportional to 2,163.92, 2,986.67 and 1,378.22 is: 1,902.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163.92 : 2,986.67 = 1,378.22 : x
  2. Step 2: Convert to fraction form
    2,163.92/2,986.67 = 1,378.22/x
  3. Step 3: Cross multiply
    2,163.92x = 2,986.67 × 1,378.22
  4. Step 4: Simplify right side
    2,163.92x = 4,116,276.84
  5. Step 5: Solve for x
    x = 4,116,276.84/2,163.92
  6. Step 6: Final answer
    x = 1,902.24

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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.