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Finding the Fourth Proportional to 7,911.36, 11,866.89 and 4,584.59

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Solution

The fourth proportional to 7,911.36, 11,866.89 and 4,584.59 is: 6,876.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911.36 : 11,866.89 = 4,584.59 : x
  2. Step 2: Convert to fraction form
    7,911.36/11,866.89 = 4,584.59/x
  3. Step 3: Cross multiply
    7,911.36x = 11,866.89 × 4,584.59
  4. Step 4: Simplify right side
    7,911.36x = 54,404,825.23
  5. Step 5: Solve for x
    x = 54,404,825.23/7,911.36
  6. Step 6: Final answer
    x = 6,876.80

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1.5x scale

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.