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Finding the Fourth Proportional to 2,670.50, 3,999.99 and 1,679.96

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Solution

The fourth proportional to 2,670.50, 3,999.99 and 1,679.96 is: 2,516.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,670.50 : 3,999.99 = 1,679.96 : x
  2. Step 2: Convert to fraction form
    2,670.50/3,999.99 = 1,679.96/x
  3. Step 3: Cross multiply
    2,670.50x = 3,999.99 × 1,679.96
  4. Step 4: Simplify right side
    2,670.50x = 6,719,823.20
  5. Step 5: Solve for x
    x = 6,719,823.20/2,670.50
  6. Step 6: Final answer
    x = 2,516.32

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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.