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Finding the Fourth Proportional to 9,370.98, 12,931.94 and 5,179.23

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Solution

The fourth proportional to 9,370.98, 12,931.94 and 5,179.23 is: 7,147.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,370.98 : 12,931.94 = 5,179.23 : x
  2. Step 2: Convert to fraction form
    9,370.98/12,931.94 = 5,179.23/x
  3. Step 3: Cross multiply
    9,370.98x = 12,931.94 × 5,179.23
  4. Step 4: Simplify right side
    9,370.98x = 66,977,504.55
  5. Step 5: Solve for x
    x = 66,977,504.55/9,370.98
  6. Step 6: Final answer
    x = 7,147.33

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.