Home / 1,382.08-2,083.46-1,290.41

Finding the Fourth Proportional to 1,382.08, 2,083.46 and 1,290.41

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Solution

The fourth proportional to 1,382.08, 2,083.46 and 1,290.41 is: 1,945.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382.08 : 2,083.46 = 1,290.41 : x
  2. Step 2: Convert to fraction form
    1,382.08/2,083.46 = 1,290.41/x
  3. Step 3: Cross multiply
    1,382.08x = 2,083.46 × 1,290.41
  4. Step 4: Simplify right side
    1,382.08x = 2,688,517.62
  5. Step 5: Solve for x
    x = 2,688,517.62/1,382.08
  6. Step 6: Final answer
    x = 1,945.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.