Home / 2,106.68-2,907.44-1,222.48

Finding the Fourth Proportional to 2,106.68, 2,907.44 and 1,222.48

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Solution

The fourth proportional to 2,106.68, 2,907.44 and 1,222.48 is: 1,687.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,106.68 : 2,907.44 = 1,222.48 : x
  2. Step 2: Convert to fraction form
    2,106.68/2,907.44 = 1,222.48/x
  3. Step 3: Cross multiply
    2,106.68x = 2,907.44 × 1,222.48
  4. Step 4: Simplify right side
    2,106.68x = 3,554,287.25
  5. Step 5: Solve for x
    x = 3,554,287.25/2,106.68
  6. Step 6: Final answer
    x = 1,687.15

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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.