Home / 2,986.21-4,121.90-1,792.06

Finding the Fourth Proportional to 2,986.21, 4,121.90 and 1,792.06

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Solution

The fourth proportional to 2,986.21, 4,121.90 and 1,792.06 is: 2,473.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.21 : 4,121.90 = 1,792.06 : x
  2. Step 2: Convert to fraction form
    2,986.21/4,121.90 = 1,792.06/x
  3. Step 3: Cross multiply
    2,986.21x = 4,121.90 × 1,792.06
  4. Step 4: Simplify right side
    2,986.21x = 7,386,692.11
  5. Step 5: Solve for x
    x = 7,386,692.11/2,986.21
  6. Step 6: Final answer
    x = 2,473.60

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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.