Home / 8,157.72-12,215.52-6,995.28

Finding the Fourth Proportional to 8,157.72, 12,215.52 and 6,995.28

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Solution

The fourth proportional to 8,157.72, 12,215.52 and 6,995.28 is: 10,474.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,157.72 : 12,215.52 = 6,995.28 : x
  2. Step 2: Convert to fraction form
    8,157.72/12,215.52 = 6,995.28/x
  3. Step 3: Cross multiply
    8,157.72x = 12,215.52 × 6,995.28
  4. Step 4: Simplify right side
    8,157.72x = 85,450,982.75
  5. Step 5: Solve for x
    x = 85,450,982.75/8,157.72
  6. Step 6: Final answer
    x = 10,474.86

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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.