Home / 6,172.78-8,518.44-3,378.28

Finding the Fourth Proportional to 6,172.78, 8,518.44 and 3,378.28

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Solution

The fourth proportional to 6,172.78, 8,518.44 and 3,378.28 is: 4,662.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,172.78 : 8,518.44 = 3,378.28 : x
  2. Step 2: Convert to fraction form
    6,172.78/8,518.44 = 3,378.28/x
  3. Step 3: Cross multiply
    6,172.78x = 8,518.44 × 3,378.28
  4. Step 4: Simplify right side
    6,172.78x = 28,777,675.48
  5. Step 5: Solve for x
    x = 28,777,675.48/6,172.78
  6. Step 6: Final answer
    x = 4,662.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.