Home / 3,938.40-5,905.72-2,295.42

Finding the Fourth Proportional to 3,938.40, 5,905.72 and 2,295.42

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Solution

The fourth proportional to 3,938.40, 5,905.72 and 2,295.42 is: 3,442.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.40 : 5,905.72 = 2,295.42 : x
  2. Step 2: Convert to fraction form
    3,938.40/5,905.72 = 2,295.42/x
  3. Step 3: Cross multiply
    3,938.40x = 5,905.72 × 2,295.42
  4. Step 4: Simplify right side
    3,938.40x = 13,556,107.80
  5. Step 5: Solve for x
    x = 13,556,107.80/3,938.40
  6. Step 6: Final answer
    x = 3,442.03

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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.