Home / 8,520.23-12,784.53-3,843.47

Finding the Fourth Proportional to 8,520.23, 12,784.53 and 3,843.47

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Solution

The fourth proportional to 8,520.23, 12,784.53 and 3,843.47 is: 5,767.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,520.23 : 12,784.53 = 3,843.47 : x
  2. Step 2: Convert to fraction form
    8,520.23/12,784.53 = 3,843.47/x
  3. Step 3: Cross multiply
    8,520.23x = 12,784.53 × 3,843.47
  4. Step 4: Simplify right side
    8,520.23x = 49,136,893.60
  5. Step 5: Solve for x
    x = 49,136,893.60/8,520.23
  6. Step 6: Final answer
    x = 5,767.09

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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.