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Finding the Fourth Proportional to 5,116, 7,672.92 and 4,147.60

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Solution

The fourth proportional to 5,116, 7,672.92 and 4,147.60 is: 6,220.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,116 : 7,672.92 = 4,147.60 : x
  2. Step 2: Convert to fraction form
    5,116/7,672.92 = 4,147.60/x
  3. Step 3: Cross multiply
    5,116x = 7,672.92 × 4,147.60
  4. Step 4: Simplify right side
    5,116x = 31,824,202.99
  5. Step 5: Solve for x
    x = 31,824,202.99/5,116
  6. Step 6: Final answer
    x = 6,220.52

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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.