Home / 8,200.30-12,300.45-4,911.70

Finding the Fourth Proportional to 8,200.30, 12,300.45 and 4,911.70

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Solution

The fourth proportional to 8,200.30, 12,300.45 and 4,911.70 is: 7,367.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,200.30 : 12,300.45 = 4,911.70 : x
  2. Step 2: Convert to fraction form
    8,200.30/12,300.45 = 4,911.70/x
  3. Step 3: Cross multiply
    8,200.30x = 12,300.45 × 4,911.70
  4. Step 4: Simplify right side
    8,200.30x = 60,416,120.27
  5. Step 5: Solve for x
    x = 60,416,120.27/8,200.30
  6. Step 6: Final answer
    x = 7,367.55

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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.