Home / 3,938.34-5,902.53-1,853.81

Finding the Fourth Proportional to 3,938.34, 5,902.53 and 1,853.81

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Solution

The fourth proportional to 3,938.34, 5,902.53 and 1,853.81 is: 2,778.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.34 : 5,902.53 = 1,853.81 : x
  2. Step 2: Convert to fraction form
    3,938.34/5,902.53 = 1,853.81/x
  3. Step 3: Cross multiply
    3,938.34x = 5,902.53 × 1,853.81
  4. Step 4: Simplify right side
    3,938.34x = 10,942,139.63
  5. Step 5: Solve for x
    x = 10,942,139.63/3,938.34
  6. Step 6: Final answer
    x = 2,778.36

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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.