Home / 8,108.70-12,147.21-7,071.90

Finding the Fourth Proportional to 8,108.70, 12,147.21 and 7,071.90

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Solution

The fourth proportional to 8,108.70, 12,147.21 and 7,071.90 is: 10,594.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,108.70 : 12,147.21 = 7,071.90 : x
  2. Step 2: Convert to fraction form
    8,108.70/12,147.21 = 7,071.90/x
  3. Step 3: Cross multiply
    8,108.70x = 12,147.21 × 7,071.90
  4. Step 4: Simplify right side
    8,108.70x = 85,903,854.40
  5. Step 5: Solve for x
    x = 85,903,854.40/8,108.70
  6. Step 6: Final answer
    x = 10,594.04

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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.