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Finding the Fourth Proportional to 1,986.98, 2,965.94 and 1,842.42

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Solution

The fourth proportional to 1,986.98, 2,965.94 and 1,842.42 is: 2,750.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.98 : 2,965.94 = 1,842.42 : x
  2. Step 2: Convert to fraction form
    1,986.98/2,965.94 = 1,842.42/x
  3. Step 3: Cross multiply
    1,986.98x = 2,965.94 × 1,842.42
  4. Step 4: Simplify right side
    1,986.98x = 5,464,512.83
  5. Step 5: Solve for x
    x = 5,464,512.83/1,986.98
  6. Step 6: Final answer
    x = 2,750.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.