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Finding the Fourth Proportional to 2,990.66, 4,485.64 and 799.56

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Solution

The fourth proportional to 2,990.66, 4,485.64 and 799.56 is: 1,199.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.66 : 4,485.64 = 799.56 : x
  2. Step 2: Convert to fraction form
    2,990.66/4,485.64 = 799.56/x
  3. Step 3: Cross multiply
    2,990.66x = 4,485.64 × 799.56
  4. Step 4: Simplify right side
    2,990.66x = 3,586,538.32
  5. Step 5: Solve for x
    x = 3,586,538.32/2,990.66
  6. Step 6: Final answer
    x = 1,199.25

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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.