Home / 2,107.07-2,907.29-1,222.36

Finding the Fourth Proportional to 2,107.07, 2,907.29 and 1,222.36

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Solution

The fourth proportional to 2,107.07, 2,907.29 and 1,222.36 is: 1,686.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.07 : 2,907.29 = 1,222.36 : x
  2. Step 2: Convert to fraction form
    2,107.07/2,907.29 = 1,222.36/x
  3. Step 3: Cross multiply
    2,107.07x = 2,907.29 × 1,222.36
  4. Step 4: Simplify right side
    2,107.07x = 3,553,739.99
  5. Step 5: Solve for x
    x = 3,553,739.99/2,107.07
  6. Step 6: Final answer
    x = 1,686.58

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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.