Home / 2,107.05-2,906.52-1,222.74

Finding the Fourth Proportional to 2,107.05, 2,906.52 and 1,222.74

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Solution

The fourth proportional to 2,107.05, 2,906.52 and 1,222.74 is: 1,686.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.05 : 2,906.52 = 1,222.74 : x
  2. Step 2: Convert to fraction form
    2,107.05/2,906.52 = 1,222.74/x
  3. Step 3: Cross multiply
    2,107.05x = 2,906.52 × 1,222.74
  4. Step 4: Simplify right side
    2,107.05x = 3,553,918.26
  5. Step 5: Solve for x
    x = 3,553,918.26/2,107.05
  6. Step 6: Final answer
    x = 1,686.68

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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.