Home / 2,659.22-3,988.81-1,268.35

Finding the Fourth Proportional to 2,659.22, 3,988.81 and 1,268.35

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Solution

The fourth proportional to 2,659.22, 3,988.81 and 1,268.35 is: 1,902.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,659.22 : 3,988.81 = 1,268.35 : x
  2. Step 2: Convert to fraction form
    2,659.22/3,988.81 = 1,268.35/x
  3. Step 3: Cross multiply
    2,659.22x = 3,988.81 × 1,268.35
  4. Step 4: Simplify right side
    2,659.22x = 5,059,187.82
  5. Step 5: Solve for x
    x = 5,059,187.82/2,659.22
  6. Step 6: Final answer
    x = 1,902.51

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1.5x scale

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.