Home / 5,106.56-7,661.82-1,986.80

Finding the Fourth Proportional to 5,106.56, 7,661.82 and 1,986.80

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Solution

The fourth proportional to 5,106.56, 7,661.82 and 1,986.80 is: 2,980.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,106.56 : 7,661.82 = 1,986.80 : x
  2. Step 2: Convert to fraction form
    5,106.56/7,661.82 = 1,986.80/x
  3. Step 3: Cross multiply
    5,106.56x = 7,661.82 × 1,986.80
  4. Step 4: Simplify right side
    5,106.56x = 15,222,503.98
  5. Step 5: Solve for x
    x = 15,222,503.98/5,106.56
  6. Step 6: Final answer
    x = 2,980.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.