Home / 2,216.80-3,059.14-1,222.08

Finding the Fourth Proportional to 2,216.80, 3,059.14 and 1,222.08

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Solution

The fourth proportional to 2,216.80, 3,059.14 and 1,222.08 is: 1,686.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,216.80 : 3,059.14 = 1,222.08 : x
  2. Step 2: Convert to fraction form
    2,216.80/3,059.14 = 1,222.08/x
  3. Step 3: Cross multiply
    2,216.80x = 3,059.14 × 1,222.08
  4. Step 4: Simplify right side
    2,216.80x = 3,738,513.81
  5. Step 5: Solve for x
    x = 3,738,513.81/2,216.80
  6. Step 6: Final answer
    x = 1,686.45

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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.