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Finding the Fourth Proportional to 1,921.83, 2,883.65 and 996.89

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Solution

The fourth proportional to 1,921.83, 2,883.65 and 996.89 is: 1,495.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.83 : 2,883.65 = 996.89 : x
  2. Step 2: Convert to fraction form
    1,921.83/2,883.65 = 996.89/x
  3. Step 3: Cross multiply
    1,921.83x = 2,883.65 × 996.89
  4. Step 4: Simplify right side
    1,921.83x = 2,874,662.45
  5. Step 5: Solve for x
    x = 2,874,662.45/1,921.83
  6. Step 6: Final answer
    x = 1,495.79

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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.