Home / 5,409.72-8,117.78-2,289.56

Finding the Fourth Proportional to 5,409.72, 8,117.78 and 2,289.56

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Solution

The fourth proportional to 5,409.72, 8,117.78 and 2,289.56 is: 3,435.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,409.72 : 8,117.78 = 2,289.56 : x
  2. Step 2: Convert to fraction form
    5,409.72/8,117.78 = 2,289.56/x
  3. Step 3: Cross multiply
    5,409.72x = 8,117.78 × 2,289.56
  4. Step 4: Simplify right side
    5,409.72x = 18,586,144.38
  5. Step 5: Solve for x
    x = 18,586,144.38/5,409.72
  6. Step 6: Final answer
    x = 3,435.69

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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.