Home / 2,391.21-3,300-1,343.34

Finding the Fourth Proportional to 2,391.21, 3,300 and 1,343.34

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Solution

The fourth proportional to 2,391.21, 3,300 and 1,343.34 is: 1,853.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.21 : 3,300 = 1,343.34 : x
  2. Step 2: Convert to fraction form
    2,391.21/3,300 = 1,343.34/x
  3. Step 3: Cross multiply
    2,391.21x = 3,300 × 1,343.34
  4. Step 4: Simplify right side
    2,391.21x = 4,433,022
  5. Step 5: Solve for x
    x = 4,433,022/2,391.21
  6. Step 6: Final answer
    x = 1,853.88

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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.