Home / 1,732.89-2,391.21-986.79

Finding the Fourth Proportional to 1,732.89, 2,391.21 and 986.79

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Solution

The fourth proportional to 1,732.89, 2,391.21 and 986.79 is: 1,361.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,732.89 : 2,391.21 = 986.79 : x
  2. Step 2: Convert to fraction form
    1,732.89/2,391.21 = 986.79/x
  3. Step 3: Cross multiply
    1,732.89x = 2,391.21 × 986.79
  4. Step 4: Simplify right side
    1,732.89x = 2,359,622.12
  5. Step 5: Solve for x
    x = 2,359,622.12/1,732.89
  6. Step 6: Final answer
    x = 1,361.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.