Home / 8,481.72-12,718.53-2,638.38

Finding the Fourth Proportional to 8,481.72, 12,718.53 and 2,638.38

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Solution

The fourth proportional to 8,481.72, 12,718.53 and 2,638.38 is: 3,956.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,481.72 : 12,718.53 = 2,638.38 : x
  2. Step 2: Convert to fraction form
    8,481.72/12,718.53 = 2,638.38/x
  3. Step 3: Cross multiply
    8,481.72x = 12,718.53 × 2,638.38
  4. Step 4: Simplify right side
    8,481.72x = 33,556,315.18
  5. Step 5: Solve for x
    x = 33,556,315.18/8,481.72
  6. Step 6: Final answer
    x = 3,956.31

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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.