Home / 8,684.85-11,975.41-6,290.09

Finding the Fourth Proportional to 8,684.85, 11,975.41 and 6,290.09

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Solution

The fourth proportional to 8,684.85, 11,975.41 and 6,290.09 is: 8,673.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,684.85 : 11,975.41 = 6,290.09 : x
  2. Step 2: Convert to fraction form
    8,684.85/11,975.41 = 6,290.09/x
  3. Step 3: Cross multiply
    8,684.85x = 11,975.41 × 6,290.09
  4. Step 4: Simplify right side
    8,684.85x = 75,326,406.69
  5. Step 5: Solve for x
    x = 75,326,406.69/8,684.85
  6. Step 6: Final answer
    x = 8,673.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.