Home / 3,480.38-5,220.46-1,289.06

Finding the Fourth Proportional to 3,480.38, 5,220.46 and 1,289.06

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Solution

The fourth proportional to 3,480.38, 5,220.46 and 1,289.06 is: 1,933.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.38 : 5,220.46 = 1,289.06 : x
  2. Step 2: Convert to fraction form
    3,480.38/5,220.46 = 1,289.06/x
  3. Step 3: Cross multiply
    3,480.38x = 5,220.46 × 1,289.06
  4. Step 4: Simplify right side
    3,480.38x = 6,729,460.07
  5. Step 5: Solve for x
    x = 6,729,460.07/3,480.38
  6. Step 6: Final answer
    x = 1,933.54

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1.5x scale

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.