Home / 4,485.76-6,728.63-2,138.65

Finding the Fourth Proportional to 4,485.76, 6,728.63 and 2,138.65

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Solution

The fourth proportional to 4,485.76, 6,728.63 and 2,138.65 is: 3,207.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,485.76 : 6,728.63 = 2,138.65 : x
  2. Step 2: Convert to fraction form
    4,485.76/6,728.63 = 2,138.65/x
  3. Step 3: Cross multiply
    4,485.76x = 6,728.63 × 2,138.65
  4. Step 4: Simplify right side
    4,485.76x = 14,390,157.03
  5. Step 5: Solve for x
    x = 14,390,157.03/4,485.76
  6. Step 6: Final answer
    x = 3,207.97

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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.