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Finding the Fourth Proportional to 1,996.60, 2,993.06 and 1,020.55

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Solution

The fourth proportional to 1,996.60, 2,993.06 and 1,020.55 is: 1,529.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,996.60 : 2,993.06 = 1,020.55 : x
  2. Step 2: Convert to fraction form
    1,996.60/2,993.06 = 1,020.55/x
  3. Step 3: Cross multiply
    1,996.60x = 2,993.06 × 1,020.55
  4. Step 4: Simplify right side
    1,996.60x = 3,054,562.28
  5. Step 5: Solve for x
    x = 3,054,562.28/1,996.60
  6. Step 6: Final answer
    x = 1,529.88

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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.