Home / 6,172.88-8,518.60-3,378.64

Finding the Fourth Proportional to 6,172.88, 8,518.60 and 3,378.64

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Solution

The fourth proportional to 6,172.88, 8,518.60 and 3,378.64 is: 4,662.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,172.88 : 8,518.60 = 3,378.64 : x
  2. Step 2: Convert to fraction form
    6,172.88/8,518.60 = 3,378.64/x
  3. Step 3: Cross multiply
    6,172.88x = 8,518.60 × 3,378.64
  4. Step 4: Simplify right side
    6,172.88x = 28,781,282.70
  5. Step 5: Solve for x
    x = 28,781,282.70/6,172.88
  6. Step 6: Final answer
    x = 4,662.54

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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.