Home / 2,986.94-4,122-1,660.66

Finding the Fourth Proportional to 2,986.94, 4,122 and 1,660.66

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Solution

The fourth proportional to 2,986.94, 4,122 and 1,660.66 is: 2,291.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.94 : 4,122 = 1,660.66 : x
  2. Step 2: Convert to fraction form
    2,986.94/4,122 = 1,660.66/x
  3. Step 3: Cross multiply
    2,986.94x = 4,122 × 1,660.66
  4. Step 4: Simplify right side
    2,986.94x = 6,845,230.22
  5. Step 5: Solve for x
    x = 6,845,230.22/2,986.94
  6. Step 6: Final answer
    x = 2,291.72

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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.