Home / 2,216.81-3,059.19-1,222.13

Finding the Fourth Proportional to 2,216.81, 3,059.19 and 1,222.13

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Solution

The fourth proportional to 2,216.81, 3,059.19 and 1,222.13 is: 1,686.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,216.81 : 3,059.19 = 1,222.13 : x
  2. Step 2: Convert to fraction form
    2,216.81/3,059.19 = 1,222.13/x
  3. Step 3: Cross multiply
    2,216.81x = 3,059.19 × 1,222.13
  4. Step 4: Simplify right side
    2,216.81x = 3,738,735.52
  5. Step 5: Solve for x
    x = 3,738,735.52/2,216.81
  6. Step 6: Final answer
    x = 1,686.54

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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.