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Finding the Fourth Proportional to 3,340.94, 5,009.24 and 1,779.94

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Solution

The fourth proportional to 3,340.94, 5,009.24 and 1,779.94 is: 2,668.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,340.94 : 5,009.24 = 1,779.94 : x
  2. Step 2: Convert to fraction form
    3,340.94/5,009.24 = 1,779.94/x
  3. Step 3: Cross multiply
    3,340.94x = 5,009.24 × 1,779.94
  4. Step 4: Simplify right side
    3,340.94x = 8,916,146.65
  5. Step 5: Solve for x
    x = 8,916,146.65/3,340.94
  6. Step 6: Final answer
    x = 2,668.75

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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.