Home / 5,187.99-7,779.69-1,489.38

Finding the Fourth Proportional to 5,187.99, 7,779.69 and 1,489.38

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Solution

The fourth proportional to 5,187.99, 7,779.69 and 1,489.38 is: 2,233.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.99 : 7,779.69 = 1,489.38 : x
  2. Step 2: Convert to fraction form
    5,187.99/7,779.69 = 1,489.38/x
  3. Step 3: Cross multiply
    5,187.99x = 7,779.69 × 1,489.38
  4. Step 4: Simplify right side
    5,187.99x = 11,586,914.69
  5. Step 5: Solve for x
    x = 11,586,914.69/5,187.99
  6. Step 6: Final answer
    x = 2,233.41

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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.