Home / 1,638.67-2,458.48-945.83

Finding the Fourth Proportional to 1,638.67, 2,458.48 and 945.83

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Solution

The fourth proportional to 1,638.67, 2,458.48 and 945.83 is: 1,419.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.67 : 2,458.48 = 945.83 : x
  2. Step 2: Convert to fraction form
    1,638.67/2,458.48 = 945.83/x
  3. Step 3: Cross multiply
    1,638.67x = 2,458.48 × 945.83
  4. Step 4: Simplify right side
    1,638.67x = 2,325,304.14
  5. Step 5: Solve for x
    x = 2,325,304.14/1,638.67
  6. Step 6: Final answer
    x = 1,419.02

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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.