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Finding the Fourth Proportional to 7,798.50, 11,697.93 and 3,181.50

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Solution

The fourth proportional to 7,798.50, 11,697.93 and 3,181.50 is: 4,772.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,798.50 : 11,697.93 = 3,181.50 : x
  2. Step 2: Convert to fraction form
    7,798.50/11,697.93 = 3,181.50/x
  3. Step 3: Cross multiply
    7,798.50x = 11,697.93 × 3,181.50
  4. Step 4: Simplify right side
    7,798.50x = 37,216,964.30
  5. Step 5: Solve for x
    x = 37,216,964.30/7,798.50
  6. Step 6: Final answer
    x = 4,772.32

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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.