Home / 3,021.76-4,533.04-1,290.78

Finding the Fourth Proportional to 3,021.76, 4,533.04 and 1,290.78

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Solution

The fourth proportional to 3,021.76, 4,533.04 and 1,290.78 is: 1,936.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,021.76 : 4,533.04 = 1,290.78 : x
  2. Step 2: Convert to fraction form
    3,021.76/4,533.04 = 1,290.78/x
  3. Step 3: Cross multiply
    3,021.76x = 4,533.04 × 1,290.78
  4. Step 4: Simplify right side
    3,021.76x = 5,851,157.37
  5. Step 5: Solve for x
    x = 5,851,157.37/3,021.76
  6. Step 6: Final answer
    x = 1,936.34

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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.