Home / 8,455.72-12,685.66-2,612.20

Finding the Fourth Proportional to 8,455.72, 12,685.66 and 2,612.20

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Solution

The fourth proportional to 8,455.72, 12,685.66 and 2,612.20 is: 3,918.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,455.72 : 12,685.66 = 2,612.20 : x
  2. Step 2: Convert to fraction form
    8,455.72/12,685.66 = 2,612.20/x
  3. Step 3: Cross multiply
    8,455.72x = 12,685.66 × 2,612.20
  4. Step 4: Simplify right side
    8,455.72x = 33,137,481.05
  5. Step 5: Solve for x
    x = 33,137,481.05/8,455.72
  6. Step 6: Final answer
    x = 3,918.94

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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.