Home / 2,412.80-3,328.96-1,364.64

Finding the Fourth Proportional to 2,412.80, 3,328.96 and 1,364.64

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Solution

The fourth proportional to 2,412.80, 3,328.96 and 1,364.64 is: 1,882.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,412.80 : 3,328.96 = 1,364.64 : x
  2. Step 2: Convert to fraction form
    2,412.80/3,328.96 = 1,364.64/x
  3. Step 3: Cross multiply
    2,412.80x = 3,328.96 × 1,364.64
  4. Step 4: Simplify right side
    2,412.80x = 4,542,831.97
  5. Step 5: Solve for x
    x = 4,542,831.97/2,412.80
  6. Step 6: Final answer
    x = 1,882.81

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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.