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Finding the Fourth Proportional to 8,896.94, 12,280.31 and 5,360.38

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Solution

The fourth proportional to 8,896.94, 12,280.31 and 5,360.38 is: 7,398.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,896.94 : 12,280.31 = 5,360.38 : x
  2. Step 2: Convert to fraction form
    8,896.94/12,280.31 = 5,360.38/x
  3. Step 3: Cross multiply
    8,896.94x = 12,280.31 × 5,360.38
  4. Step 4: Simplify right side
    8,896.94x = 65,827,090.72
  5. Step 5: Solve for x
    x = 65,827,090.72/8,896.94
  6. Step 6: Final answer
    x = 7,398.85

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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.