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Finding the Fourth Proportional to 1,401.66, 2,105.73 and 1,213.74

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Solution

The fourth proportional to 1,401.66, 2,105.73 and 1,213.74 is: 1,823.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,401.66 : 2,105.73 = 1,213.74 : x
  2. Step 2: Convert to fraction form
    1,401.66/2,105.73 = 1,213.74/x
  3. Step 3: Cross multiply
    1,401.66x = 2,105.73 × 1,213.74
  4. Step 4: Simplify right side
    1,401.66x = 2,555,808.73
  5. Step 5: Solve for x
    x = 2,555,808.73/1,401.66
  6. Step 6: Final answer
    x = 1,823.42

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.