Home / 6,688.31-9,991.79-4,329.09

Finding the Fourth Proportional to 6,688.31, 9,991.79 and 4,329.09

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Solution

The fourth proportional to 6,688.31, 9,991.79 and 4,329.09 is: 6,467.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,688.31 : 9,991.79 = 4,329.09 : x
  2. Step 2: Convert to fraction form
    6,688.31/9,991.79 = 4,329.09/x
  3. Step 3: Cross multiply
    6,688.31x = 9,991.79 × 4,329.09
  4. Step 4: Simplify right side
    6,688.31x = 43,255,336.53
  5. Step 5: Solve for x
    x = 43,255,336.53/6,688.31
  6. Step 6: Final answer
    x = 6,467.31

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.