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Finding the Fourth Proportional to 3,779.28, 5,673.06 and 2,789.01

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Solution

The fourth proportional to 3,779.28, 5,673.06 and 2,789.01 is: 4,186.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,779.28 : 5,673.06 = 2,789.01 : x
  2. Step 2: Convert to fraction form
    3,779.28/5,673.06 = 2,789.01/x
  3. Step 3: Cross multiply
    3,779.28x = 5,673.06 × 2,789.01
  4. Step 4: Simplify right side
    3,779.28x = 15,822,221.07
  5. Step 5: Solve for x
    x = 15,822,221.07/3,779.28
  6. Step 6: Final answer
    x = 4,186.57

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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.