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Finding the Fourth Proportional to 2,990.67, 4,485.68 and 799.62

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Solution

The fourth proportional to 2,990.67, 4,485.68 and 799.62 is: 1,199.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.67 : 4,485.68 = 799.62 : x
  2. Step 2: Convert to fraction form
    2,990.67/4,485.68 = 799.62/x
  3. Step 3: Cross multiply
    2,990.67x = 4,485.68 × 799.62
  4. Step 4: Simplify right side
    2,990.67x = 3,586,817.01
  5. Step 5: Solve for x
    x = 3,586,817.01/2,990.67
  6. Step 6: Final answer
    x = 1,199.34

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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.