Home / 7,919.25-11,880.09-5,744.40

Finding the Fourth Proportional to 7,919.25, 11,880.09 and 5,744.40

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Solution

The fourth proportional to 7,919.25, 11,880.09 and 5,744.40 is: 8,617.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,919.25 : 11,880.09 = 5,744.40 : x
  2. Step 2: Convert to fraction form
    7,919.25/11,880.09 = 5,744.40/x
  3. Step 3: Cross multiply
    7,919.25x = 11,880.09 × 5,744.40
  4. Step 4: Simplify right side
    7,919.25x = 68,243,989.00
  5. Step 5: Solve for x
    x = 68,243,989.00/7,919.25
  6. Step 6: Final answer
    x = 8,617.48

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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.