Home / 1,268.20-1,913.77-1,222.45

Finding the Fourth Proportional to 1,268.20, 1,913.77 and 1,222.45

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Solution

The fourth proportional to 1,268.20, 1,913.77 and 1,222.45 is: 1,844.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268.20 : 1,913.77 = 1,222.45 : x
  2. Step 2: Convert to fraction form
    1,268.20/1,913.77 = 1,222.45/x
  3. Step 3: Cross multiply
    1,268.20x = 1,913.77 × 1,222.45
  4. Step 4: Simplify right side
    1,268.20x = 2,339,488.14
  5. Step 5: Solve for x
    x = 2,339,488.14/1,268.20
  6. Step 6: Final answer
    x = 1,844.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.