Home / 3,984.51-5,976.65-1,905.98

Finding the Fourth Proportional to 3,984.51, 5,976.65 and 1,905.98

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Solution

The fourth proportional to 3,984.51, 5,976.65 and 1,905.98 is: 2,858.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,984.51 : 5,976.65 = 1,905.98 : x
  2. Step 2: Convert to fraction form
    3,984.51/5,976.65 = 1,905.98/x
  3. Step 3: Cross multiply
    3,984.51x = 5,976.65 × 1,905.98
  4. Step 4: Simplify right side
    3,984.51x = 11,391,335.95
  5. Step 5: Solve for x
    x = 11,391,335.95/3,984.51
  6. Step 6: Final answer
    x = 2,858.91

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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.