Home / 7,917.72-11,880.71-5,744.38

Finding the Fourth Proportional to 7,917.72, 11,880.71 and 5,744.38

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Solution

The fourth proportional to 7,917.72, 11,880.71 and 5,744.38 is: 8,619.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,917.72 : 11,880.71 = 5,744.38 : x
  2. Step 2: Convert to fraction form
    7,917.72/11,880.71 = 5,744.38/x
  3. Step 3: Cross multiply
    7,917.72x = 11,880.71 × 5,744.38
  4. Step 4: Simplify right side
    7,917.72x = 68,247,312.91
  5. Step 5: Solve for x
    x = 68,247,312.91/7,917.72
  6. Step 6: Final answer
    x = 8,619.57

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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.