Home / 3,938.60-5,435.06-2,169.87

Finding the Fourth Proportional to 3,938.60, 5,435.06 and 2,169.87

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Solution

The fourth proportional to 3,938.60, 5,435.06 and 2,169.87 is: 2,994.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.60 : 5,435.06 = 2,169.87 : x
  2. Step 2: Convert to fraction form
    3,938.60/5,435.06 = 2,169.87/x
  3. Step 3: Cross multiply
    3,938.60x = 5,435.06 × 2,169.87
  4. Step 4: Simplify right side
    3,938.60x = 11,793,362.79
  5. Step 5: Solve for x
    x = 11,793,362.79/3,938.60
  6. Step 6: Final answer
    x = 2,994.31

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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.