Home / 3,779.92-5,665.75-1,313.42

Finding the Fourth Proportional to 3,779.92, 5,665.75 and 1,313.42

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Solution

The fourth proportional to 3,779.92, 5,665.75 and 1,313.42 is: 1,968.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,779.92 : 5,665.75 = 1,313.42 : x
  2. Step 2: Convert to fraction form
    3,779.92/5,665.75 = 1,313.42/x
  3. Step 3: Cross multiply
    3,779.92x = 5,665.75 × 1,313.42
  4. Step 4: Simplify right side
    3,779.92x = 7,441,477.75
  5. Step 5: Solve for x
    x = 7,441,477.75/3,779.92
  6. Step 6: Final answer
    x = 1,968.69

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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.