Home / 7,761.50-11,638.83-2,213.58

Finding the Fourth Proportional to 7,761.50, 11,638.83 and 2,213.58

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Solution

The fourth proportional to 7,761.50, 11,638.83 and 2,213.58 is: 3,319.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,761.50 : 11,638.83 = 2,213.58 : x
  2. Step 2: Convert to fraction form
    7,761.50/11,638.83 = 2,213.58/x
  3. Step 3: Cross multiply
    7,761.50x = 11,638.83 × 2,213.58
  4. Step 4: Simplify right side
    7,761.50x = 25,763,481.31
  5. Step 5: Solve for x
    x = 25,763,481.31/7,761.50
  6. Step 6: Final answer
    x = 3,319.40

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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.