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Finding the Fourth Proportional to 1,998.13, 2,997.33 and 958.36

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Solution

The fourth proportional to 1,998.13, 2,997.33 and 958.36 is: 1,437.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998.13 : 2,997.33 = 958.36 : x
  2. Step 2: Convert to fraction form
    1,998.13/2,997.33 = 958.36/x
  3. Step 3: Cross multiply
    1,998.13x = 2,997.33 × 958.36
  4. Step 4: Simplify right side
    1,998.13x = 2,872,521.18
  5. Step 5: Solve for x
    x = 2,872,521.18/1,998.13
  6. Step 6: Final answer
    x = 1,437.60

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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.