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Finding the Fourth Proportional to 4,921.97, 7,383.56 and 1,999.89

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Solution

The fourth proportional to 4,921.97, 7,383.56 and 1,999.89 is: 3,000.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,921.97 : 7,383.56 = 1,999.89 : x
  2. Step 2: Convert to fraction form
    4,921.97/7,383.56 = 1,999.89/x
  3. Step 3: Cross multiply
    4,921.97x = 7,383.56 × 1,999.89
  4. Step 4: Simplify right side
    4,921.97x = 14,766,297.81
  5. Step 5: Solve for x
    x = 14,766,297.81/4,921.97
  6. Step 6: Final answer
    x = 3,000.08

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1.5x scale

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.