Home / 1,789.77-2,686.32-1,268.28

Finding the Fourth Proportional to 1,789.77, 2,686.32 and 1,268.28

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Solution

The fourth proportional to 1,789.77, 2,686.32 and 1,268.28 is: 1,903.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789.77 : 2,686.32 = 1,268.28 : x
  2. Step 2: Convert to fraction form
    1,789.77/2,686.32 = 1,268.28/x
  3. Step 3: Cross multiply
    1,789.77x = 2,686.32 × 1,268.28
  4. Step 4: Simplify right side
    1,789.77x = 3,407,005.93
  5. Step 5: Solve for x
    x = 3,407,005.93/1,789.77
  6. Step 6: Final answer
    x = 1,903.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.