Home / 1,324.24-1,990.20-1,106.20

Finding the Fourth Proportional to 1,324.24, 1,990.20 and 1,106.20

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Solution

The fourth proportional to 1,324.24, 1,990.20 and 1,106.20 is: 1,662.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,324.24 : 1,990.20 = 1,106.20 : x
  2. Step 2: Convert to fraction form
    1,324.24/1,990.20 = 1,106.20/x
  3. Step 3: Cross multiply
    1,324.24x = 1,990.20 × 1,106.20
  4. Step 4: Simplify right side
    1,324.24x = 2,201,559.24
  5. Step 5: Solve for x
    x = 2,201,559.24/1,324.24
  6. Step 6: Final answer
    x = 1,662.51

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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.