Home / 8,113.72-12,171.30-6,266.20

Finding the Fourth Proportional to 8,113.72, 12,171.30 and 6,266.20

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Solution

The fourth proportional to 8,113.72, 12,171.30 and 6,266.20 is: 9,399.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,113.72 : 12,171.30 = 6,266.20 : x
  2. Step 2: Convert to fraction form
    8,113.72/12,171.30 = 6,266.20/x
  3. Step 3: Cross multiply
    8,113.72x = 12,171.30 × 6,266.20
  4. Step 4: Simplify right side
    8,113.72x = 76,267,800.06
  5. Step 5: Solve for x
    x = 76,267,800.06/8,113.72
  6. Step 6: Final answer
    x = 9,399.86

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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.