Home / 1,223.16-1,830.63-1,122.03

Finding the Fourth Proportional to 1,223.16, 1,830.63 and 1,122.03

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Solution

The fourth proportional to 1,223.16, 1,830.63 and 1,122.03 is: 1,679.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223.16 : 1,830.63 = 1,122.03 : x
  2. Step 2: Convert to fraction form
    1,223.16/1,830.63 = 1,122.03/x
  3. Step 3: Cross multiply
    1,223.16x = 1,830.63 × 1,122.03
  4. Step 4: Simplify right side
    1,223.16x = 2,054,021.78
  5. Step 5: Solve for x
    x = 2,054,021.78/1,223.16
  6. Step 6: Final answer
    x = 1,679.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.