Home / 1,396.23-2,090.22-1,223.23

Finding the Fourth Proportional to 1,396.23, 2,090.22 and 1,223.23

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Solution

The fourth proportional to 1,396.23, 2,090.22 and 1,223.23 is: 1,831.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396.23 : 2,090.22 = 1,223.23 : x
  2. Step 2: Convert to fraction form
    1,396.23/2,090.22 = 1,223.23/x
  3. Step 3: Cross multiply
    1,396.23x = 2,090.22 × 1,223.23
  4. Step 4: Simplify right side
    1,396.23x = 2,556,819.81
  5. Step 5: Solve for x
    x = 2,556,819.81/1,396.23
  6. Step 6: Final answer
    x = 1,831.23

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1.5x scale

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.