Home / 3,480.95-5,220.97-1,289.39

Finding the Fourth Proportional to 3,480.95, 5,220.97 and 1,289.39

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Solution

The fourth proportional to 3,480.95, 5,220.97 and 1,289.39 is: 1,933.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.95 : 5,220.97 = 1,289.39 : x
  2. Step 2: Convert to fraction form
    3,480.95/5,220.97 = 1,289.39/x
  3. Step 3: Cross multiply
    3,480.95x = 5,220.97 × 1,289.39
  4. Step 4: Simplify right side
    3,480.95x = 6,731,837.18
  5. Step 5: Solve for x
    x = 6,731,837.18/3,480.95
  6. Step 6: Final answer
    x = 1,933.91

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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.