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Finding the Fourth Proportional to 7,296, 10,087.68 and 6,969.60

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Solution

The fourth proportional to 7,296, 10,087.68 and 6,969.60 is: 9,636.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,296 : 10,087.68 = 6,969.60 : x
  2. Step 2: Convert to fraction form
    7,296/10,087.68 = 6,969.60/x
  3. Step 3: Cross multiply
    7,296x = 10,087.68 × 6,969.60
  4. Step 4: Simplify right side
    7,296x = 70,307,094.53
  5. Step 5: Solve for x
    x = 70,307,094.53/7,296
  6. Step 6: Final answer
    x = 9,636.39

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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.