Home / 1,941.45-2,681.77-1,438.33

Finding the Fourth Proportional to 1,941.45, 2,681.77 and 1,438.33

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Solution

The fourth proportional to 1,941.45, 2,681.77 and 1,438.33 is: 1,986.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,941.45 : 2,681.77 = 1,438.33 : x
  2. Step 2: Convert to fraction form
    1,941.45/2,681.77 = 1,438.33/x
  3. Step 3: Cross multiply
    1,941.45x = 2,681.77 × 1,438.33
  4. Step 4: Simplify right side
    1,941.45x = 3,857,249.64
  5. Step 5: Solve for x
    x = 3,857,249.64/1,941.45
  6. Step 6: Final answer
    x = 1,986.79

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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.