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Finding the Fourth Proportional to 6,629.04, 9,928.98 and 3,159

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Solution

The fourth proportional to 6,629.04, 9,928.98 and 3,159 is: 4,731.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,629.04 : 9,928.98 = 3,159 : x
  2. Step 2: Convert to fraction form
    6,629.04/9,928.98 = 3,159/x
  3. Step 3: Cross multiply
    6,629.04x = 9,928.98 × 3,159
  4. Step 4: Simplify right side
    6,629.04x = 31,365,647.82
  5. Step 5: Solve for x
    x = 31,365,647.82/6,629.04
  6. Step 6: Final answer
    x = 4,731.55

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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.