Home / 4,485.62-6,728.43-2,178.74

Finding the Fourth Proportional to 4,485.62, 6,728.43 and 2,178.74

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Solution

The fourth proportional to 4,485.62, 6,728.43 and 2,178.74 is: 3,268.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,485.62 : 6,728.43 = 2,178.74 : x
  2. Step 2: Convert to fraction form
    4,485.62/6,728.43 = 2,178.74/x
  3. Step 3: Cross multiply
    4,485.62x = 6,728.43 × 2,178.74
  4. Step 4: Simplify right side
    4,485.62x = 14,659,499.58
  5. Step 5: Solve for x
    x = 14,659,499.58/4,485.62
  6. Step 6: Final answer
    x = 3,268.11

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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.