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Finding the Fourth Proportional to 9,861.55, 13,608.61 and 5,880.60

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Solution

The fourth proportional to 9,861.55, 13,608.61 and 5,880.60 is: 8,115.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,861.55 : 13,608.61 = 5,880.60 : x
  2. Step 2: Convert to fraction form
    9,861.55/13,608.61 = 5,880.60/x
  3. Step 3: Cross multiply
    9,861.55x = 13,608.61 × 5,880.60
  4. Step 4: Simplify right side
    9,861.55x = 80,026,777.26
  5. Step 5: Solve for x
    x = 80,026,777.26/9,861.55
  6. Step 6: Final answer
    x = 8,115.03

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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.