Home / 1,945.68-2,685.96-1,199.79

Finding the Fourth Proportional to 1,945.68, 2,685.96 and 1,199.79

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Solution

The fourth proportional to 1,945.68, 2,685.96 and 1,199.79 is: 1,656.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.68 : 2,685.96 = 1,199.79 : x
  2. Step 2: Convert to fraction form
    1,945.68/2,685.96 = 1,199.79/x
  3. Step 3: Cross multiply
    1,945.68x = 2,685.96 × 1,199.79
  4. Step 4: Simplify right side
    1,945.68x = 3,222,587.95
  5. Step 5: Solve for x
    x = 3,222,587.95/1,945.68
  6. Step 6: Final answer
    x = 1,656.28

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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.