Home / 3,469.50-5,204.70-1,278.45

Finding the Fourth Proportional to 3,469.50, 5,204.70 and 1,278.45

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Solution

The fourth proportional to 3,469.50, 5,204.70 and 1,278.45 is: 1,917.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,469.50 : 5,204.70 = 1,278.45 : x
  2. Step 2: Convert to fraction form
    3,469.50/5,204.70 = 1,278.45/x
  3. Step 3: Cross multiply
    3,469.50x = 5,204.70 × 1,278.45
  4. Step 4: Simplify right side
    3,469.50x = 6,653,948.72
  5. Step 5: Solve for x
    x = 6,653,948.72/3,469.50
  6. Step 6: Final answer
    x = 1,917.84

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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.