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Finding the Fourth Proportional to 7,179.48, 9,905.31 and 5,850.90

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Solution

The fourth proportional to 7,179.48, 9,905.31 and 5,850.90 is: 8,072.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,179.48 : 9,905.31 = 5,850.90 : x
  2. Step 2: Convert to fraction form
    7,179.48/9,905.31 = 5,850.90/x
  3. Step 3: Cross multiply
    7,179.48x = 9,905.31 × 5,850.90
  4. Step 4: Simplify right side
    7,179.48x = 57,954,978.28
  5. Step 5: Solve for x
    x = 57,954,978.28/7,179.48
  6. Step 6: Final answer
    x = 8,072.31

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1.5x scale

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.