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Finding the Fourth Proportional to 8,697.36, 12,000.48 and 5,161.74

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Solution

The fourth proportional to 8,697.36, 12,000.48 and 5,161.74 is: 7,122.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,697.36 : 12,000.48 = 5,161.74 : x
  2. Step 2: Convert to fraction form
    8,697.36/12,000.48 = 5,161.74/x
  3. Step 3: Cross multiply
    8,697.36x = 12,000.48 × 5,161.74
  4. Step 4: Simplify right side
    8,697.36x = 61,943,357.64
  5. Step 5: Solve for x
    x = 61,943,357.64/8,697.36
  6. Step 6: Final answer
    x = 7,122.09

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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.