Home / 6,376.78-9,560.01-1,991.98

Finding the Fourth Proportional to 6,376.78, 9,560.01 and 1,991.98

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Solution

The fourth proportional to 6,376.78, 9,560.01 and 1,991.98 is: 2,986.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,376.78 : 9,560.01 = 1,991.98 : x
  2. Step 2: Convert to fraction form
    6,376.78/9,560.01 = 1,991.98/x
  3. Step 3: Cross multiply
    6,376.78x = 9,560.01 × 1,991.98
  4. Step 4: Simplify right side
    6,376.78x = 19,043,348.72
  5. Step 5: Solve for x
    x = 19,043,348.72/6,376.78
  6. Step 6: Final answer
    x = 2,986.36

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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.