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Finding the Fourth Proportional to 3,968.22, 5,475.93 and 2,199.72

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Solution

The fourth proportional to 3,968.22, 5,475.93 and 2,199.72 is: 3,035.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,968.22 : 5,475.93 = 2,199.72 : x
  2. Step 2: Convert to fraction form
    3,968.22/5,475.93 = 2,199.72/x
  3. Step 3: Cross multiply
    3,968.22x = 5,475.93 × 2,199.72
  4. Step 4: Simplify right side
    3,968.22x = 12,045,512.74
  5. Step 5: Solve for x
    x = 12,045,512.74/3,968.22
  6. Step 6: Final answer
    x = 3,035.50

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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.