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Finding the Fourth Proportional to 8,609.90, 11,779.43 and 8,573.04

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Solution

The fourth proportional to 8,609.90, 11,779.43 and 8,573.04 is: 11,729.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,609.90 : 11,779.43 = 8,573.04 : x
  2. Step 2: Convert to fraction form
    8,609.90/11,779.43 = 8,573.04/x
  3. Step 3: Cross multiply
    8,609.90x = 11,779.43 × 8,573.04
  4. Step 4: Simplify right side
    8,609.90x = 100,985,481.70
  5. Step 5: Solve for x
    x = 100,985,481.70/8,609.90
  6. Step 6: Final answer
    x = 11,729.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.