Home / 2,389.70-3,297.81-1,327.49

Finding the Fourth Proportional to 2,389.70, 3,297.81 and 1,327.49

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Solution

The fourth proportional to 2,389.70, 3,297.81 and 1,327.49 is: 1,831.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.70 : 3,297.81 = 1,327.49 : x
  2. Step 2: Convert to fraction form
    2,389.70/3,297.81 = 1,327.49/x
  3. Step 3: Cross multiply
    2,389.70x = 3,297.81 × 1,327.49
  4. Step 4: Simplify right side
    2,389.70x = 4,377,809.80
  5. Step 5: Solve for x
    x = 4,377,809.80/2,389.70
  6. Step 6: Final answer
    x = 1,831.95

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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.