Home / 1,986.41-2,735.00-1,512.80

Finding the Fourth Proportional to 1,986.41, 2,735.00 and 1,512.80

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Solution

The fourth proportional to 1,986.41, 2,735.00 and 1,512.80 is: 2,082.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.41 : 2,735.00 = 1,512.80 : x
  2. Step 2: Convert to fraction form
    1,986.41/2,735.00 = 1,512.80/x
  3. Step 3: Cross multiply
    1,986.41x = 2,735.00 × 1,512.80
  4. Step 4: Simplify right side
    1,986.41x = 4,137,486.76
  5. Step 5: Solve for x
    x = 4,137,486.76/1,986.41
  6. Step 6: Final answer
    x = 2,082.90

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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.