Home / 3,005.65-4,147.50-1,679.41

Finding the Fourth Proportional to 3,005.65, 4,147.50 and 1,679.41

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Solution

The fourth proportional to 3,005.65, 4,147.50 and 1,679.41 is: 2,317.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,005.65 : 4,147.50 = 1,679.41 : x
  2. Step 2: Convert to fraction form
    3,005.65/4,147.50 = 1,679.41/x
  3. Step 3: Cross multiply
    3,005.65x = 4,147.50 × 1,679.41
  4. Step 4: Simplify right side
    3,005.65x = 6,965,352.98
  5. Step 5: Solve for x
    x = 6,965,352.98/3,005.65
  6. Step 6: Final answer
    x = 2,317.42

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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.