Home / 2,107.16-2,908.06-1,222.91

Finding the Fourth Proportional to 2,107.16, 2,908.06 and 1,222.91

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Solution

The fourth proportional to 2,107.16, 2,908.06 and 1,222.91 is: 1,687.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.16 : 2,908.06 = 1,222.91 : x
  2. Step 2: Convert to fraction form
    2,107.16/2,908.06 = 1,222.91/x
  3. Step 3: Cross multiply
    2,107.16x = 2,908.06 × 1,222.91
  4. Step 4: Simplify right side
    2,107.16x = 3,556,301.65
  5. Step 5: Solve for x
    x = 3,556,301.65/2,107.16
  6. Step 6: Final answer
    x = 1,687.72

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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.