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Finding the Fourth Proportional to 1,998.38, 2,995.09 and 1,268.17

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Solution

The fourth proportional to 1,998.38, 2,995.09 and 1,268.17 is: 1,900.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998.38 : 2,995.09 = 1,268.17 : x
  2. Step 2: Convert to fraction form
    1,998.38/2,995.09 = 1,268.17/x
  3. Step 3: Cross multiply
    1,998.38x = 2,995.09 × 1,268.17
  4. Step 4: Simplify right side
    1,998.38x = 3,798,272.63
  5. Step 5: Solve for x
    x = 3,798,272.63/1,998.38
  6. Step 6: Final answer
    x = 1,900.67

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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.