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Finding the Fourth Proportional to 8,977.48, 12,388.44 and 4,997.88

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Solution

The fourth proportional to 8,977.48, 12,388.44 and 4,997.88 is: 6,896.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,977.48 : 12,388.44 = 4,997.88 : x
  2. Step 2: Convert to fraction form
    8,977.48/12,388.44 = 4,997.88/x
  3. Step 3: Cross multiply
    8,977.48x = 12,388.44 × 4,997.88
  4. Step 4: Simplify right side
    8,977.48x = 61,915,936.51
  5. Step 5: Solve for x
    x = 61,915,936.51/8,977.48
  6. Step 6: Final answer
    x = 6,896.81

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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.