Home / 2,106.14-2,907.09-1,222.34

Finding the Fourth Proportional to 2,106.14, 2,907.09 and 1,222.34

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Solution

The fourth proportional to 2,106.14, 2,907.09 and 1,222.34 is: 1,687.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,106.14 : 2,907.09 = 1,222.34 : x
  2. Step 2: Convert to fraction form
    2,106.14/2,907.09 = 1,222.34/x
  3. Step 3: Cross multiply
    2,106.14x = 2,907.09 × 1,222.34
  4. Step 4: Simplify right side
    2,106.14x = 3,553,452.39
  5. Step 5: Solve for x
    x = 3,553,452.39/2,106.14
  6. Step 6: Final answer
    x = 1,687.19

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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.