Home / 1,899.29-2,620.71-1,268.81

Finding the Fourth Proportional to 1,899.29, 2,620.71 and 1,268.81

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Solution

The fourth proportional to 1,899.29, 2,620.71 and 1,268.81 is: 1,750.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,899.29 : 2,620.71 = 1,268.81 : x
  2. Step 2: Convert to fraction form
    1,899.29/2,620.71 = 1,268.81/x
  3. Step 3: Cross multiply
    1,899.29x = 2,620.71 × 1,268.81
  4. Step 4: Simplify right side
    1,899.29x = 3,325,163.61
  5. Step 5: Solve for x
    x = 3,325,163.61/1,899.29
  6. Step 6: Final answer
    x = 1,750.74

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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.