Home / 2,169.07-3,240.42-1,382.81

Finding the Fourth Proportional to 2,169.07, 3,240.42 and 1,382.81

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Solution

The fourth proportional to 2,169.07, 3,240.42 and 1,382.81 is: 2,065.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,169.07 : 3,240.42 = 1,382.81 : x
  2. Step 2: Convert to fraction form
    2,169.07/3,240.42 = 1,382.81/x
  3. Step 3: Cross multiply
    2,169.07x = 3,240.42 × 1,382.81
  4. Step 4: Simplify right side
    2,169.07x = 4,480,863.79
  5. Step 5: Solve for x
    x = 4,480,863.79/2,169.07
  6. Step 6: Final answer
    x = 2,065.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.