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Finding the Fourth Proportional to 1,489.41, 2,231.43 and 1,401.58

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Solution

The fourth proportional to 1,489.41, 2,231.43 and 1,401.58 is: 2,099.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.41 : 2,231.43 = 1,401.58 : x
  2. Step 2: Convert to fraction form
    1,489.41/2,231.43 = 1,401.58/x
  3. Step 3: Cross multiply
    1,489.41x = 2,231.43 × 1,401.58
  4. Step 4: Simplify right side
    1,489.41x = 3,127,527.66
  5. Step 5: Solve for x
    x = 3,127,527.66/1,489.41
  6. Step 6: Final answer
    x = 2,099.84

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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.