Home / 3,469.90-5,201.70-1,278.10

Finding the Fourth Proportional to 3,469.90, 5,201.70 and 1,278.10

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Solution

The fourth proportional to 3,469.90, 5,201.70 and 1,278.10 is: 1,915.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,469.90 : 5,201.70 = 1,278.10 : x
  2. Step 2: Convert to fraction form
    3,469.90/5,201.70 = 1,278.10/x
  3. Step 3: Cross multiply
    3,469.90x = 5,201.70 × 1,278.10
  4. Step 4: Simplify right side
    3,469.90x = 6,648,292.77
  5. Step 5: Solve for x
    x = 6,648,292.77/3,469.90
  6. Step 6: Final answer
    x = 1,915.99

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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.