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Finding the Fourth Proportional to 2,999.85, 4,141.72 and 1,938.09

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Solution

The fourth proportional to 2,999.85, 4,141.72 and 1,938.09 is: 2,675.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,999.85 : 4,141.72 = 1,938.09 : x
  2. Step 2: Convert to fraction form
    2,999.85/4,141.72 = 1,938.09/x
  3. Step 3: Cross multiply
    2,999.85x = 4,141.72 × 1,938.09
  4. Step 4: Simplify right side
    2,999.85x = 8,027,026.11
  5. Step 5: Solve for x
    x = 8,027,026.11/2,999.85
  6. Step 6: Final answer
    x = 2,675.81

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1.5x scale

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.