Home / 1,986.87-2,742.98-1,776.54

Finding the Fourth Proportional to 1,986.87, 2,742.98 and 1,776.54

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Solution

The fourth proportional to 1,986.87, 2,742.98 and 1,776.54 is: 2,452.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.87 : 2,742.98 = 1,776.54 : x
  2. Step 2: Convert to fraction form
    1,986.87/2,742.98 = 1,776.54/x
  3. Step 3: Cross multiply
    1,986.87x = 2,742.98 × 1,776.54
  4. Step 4: Simplify right side
    1,986.87x = 4,872,991.09
  5. Step 5: Solve for x
    x = 4,872,991.09/1,986.87
  6. Step 6: Final answer
    x = 2,452.60

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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.