Home / 8,156.92-11,261.55-5,638.09

Finding the Fourth Proportional to 8,156.92, 11,261.55 and 5,638.09

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Solution

The fourth proportional to 8,156.92, 11,261.55 and 5,638.09 is: 7,784.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,156.92 : 11,261.55 = 5,638.09 : x
  2. Step 2: Convert to fraction form
    8,156.92/11,261.55 = 5,638.09/x
  3. Step 3: Cross multiply
    8,156.92x = 11,261.55 × 5,638.09
  4. Step 4: Simplify right side
    8,156.92x = 63,493,632.44
  5. Step 5: Solve for x
    x = 63,493,632.44/8,156.92
  6. Step 6: Final answer
    x = 7,784.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.