Home / 1,938.42-2,675.26-1,230.60

Finding the Fourth Proportional to 1,938.42, 2,675.26 and 1,230.60

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Solution

The fourth proportional to 1,938.42, 2,675.26 and 1,230.60 is: 1,698.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.42 : 2,675.26 = 1,230.60 : x
  2. Step 2: Convert to fraction form
    1,938.42/2,675.26 = 1,230.60/x
  3. Step 3: Cross multiply
    1,938.42x = 2,675.26 × 1,230.60
  4. Step 4: Simplify right side
    1,938.42x = 3,292,174.96
  5. Step 5: Solve for x
    x = 3,292,174.96/1,938.42
  6. Step 6: Final answer
    x = 1,698.38

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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.