Home / 2,418.90-3,628.38-1,324.20

Finding the Fourth Proportional to 2,418.90, 3,628.38 and 1,324.20

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Solution

The fourth proportional to 2,418.90, 3,628.38 and 1,324.20 is: 1,986.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,418.90 : 3,628.38 = 1,324.20 : x
  2. Step 2: Convert to fraction form
    2,418.90/3,628.38 = 1,324.20/x
  3. Step 3: Cross multiply
    2,418.90x = 3,628.38 × 1,324.20
  4. Step 4: Simplify right side
    2,418.90x = 4,804,700.80
  5. Step 5: Solve for x
    x = 4,804,700.80/2,418.90
  6. Step 6: Final answer
    x = 1,986.32

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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.