Home / 1,984.37-2,977.90-1,326.98

Finding the Fourth Proportional to 1,984.37, 2,977.90 and 1,326.98

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Solution

The fourth proportional to 1,984.37, 2,977.90 and 1,326.98 is: 1,991.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984.37 : 2,977.90 = 1,326.98 : x
  2. Step 2: Convert to fraction form
    1,984.37/2,977.90 = 1,326.98/x
  3. Step 3: Cross multiply
    1,984.37x = 2,977.90 × 1,326.98
  4. Step 4: Simplify right side
    1,984.37x = 3,951,617.87
  5. Step 5: Solve for x
    x = 3,951,617.87/1,984.37
  6. Step 6: Final answer
    x = 1,991.38

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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.