Home / 5,409.09-8,115.07-1,711.38

Finding the Fourth Proportional to 5,409.09, 8,115.07 and 1,711.38

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Solution

The fourth proportional to 5,409.09, 8,115.07 and 1,711.38 is: 2,567.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,409.09 : 8,115.07 = 1,711.38 : x
  2. Step 2: Convert to fraction form
    5,409.09/8,115.07 = 1,711.38/x
  3. Step 3: Cross multiply
    5,409.09x = 8,115.07 × 1,711.38
  4. Step 4: Simplify right side
    5,409.09x = 13,887,959.94
  5. Step 5: Solve for x
    x = 13,887,959.94/5,409.09
  6. Step 6: Final answer
    x = 2,567.52

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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.