Home / 2,389.20-3,297.12-1,326.99

Finding the Fourth Proportional to 2,389.20, 3,297.12 and 1,326.99

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Solution

The fourth proportional to 2,389.20, 3,297.12 and 1,326.99 is: 1,831.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.20 : 3,297.12 = 1,326.99 : x
  2. Step 2: Convert to fraction form
    2,389.20/3,297.12 = 1,326.99/x
  3. Step 3: Cross multiply
    2,389.20x = 3,297.12 × 1,326.99
  4. Step 4: Simplify right side
    2,389.20x = 4,375,245.27
  5. Step 5: Solve for x
    x = 4,375,245.27/2,389.20
  6. Step 6: Final answer
    x = 1,831.26

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1.5x scale

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.