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Finding the Fourth Proportional to 4,606, 6,908.82 and 1,318.96

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Solution

The fourth proportional to 4,606, 6,908.82 and 1,318.96 is: 1,978.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,606 : 6,908.82 = 1,318.96 : x
  2. Step 2: Convert to fraction form
    4,606/6,908.82 = 1,318.96/x
  3. Step 3: Cross multiply
    4,606x = 6,908.82 × 1,318.96
  4. Step 4: Simplify right side
    4,606x = 9,112,457.23
  5. Step 5: Solve for x
    x = 9,112,457.23/4,606
  6. Step 6: Final answer
    x = 1,978.39

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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.