Home / 8,195.40-12,285.90-4,909.80

Finding the Fourth Proportional to 8,195.40, 12,285.90 and 4,909.80

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Solution

The fourth proportional to 8,195.40, 12,285.90 and 4,909.80 is: 7,360.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,195.40 : 12,285.90 = 4,909.80 : x
  2. Step 2: Convert to fraction form
    8,195.40/12,285.90 = 4,909.80/x
  3. Step 3: Cross multiply
    8,195.40x = 12,285.90 × 4,909.80
  4. Step 4: Simplify right side
    8,195.40x = 60,321,311.82
  5. Step 5: Solve for x
    x = 60,321,311.82/8,195.40
  6. Step 6: Final answer
    x = 7,360.39

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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.