Home / 8,285.80-12,428.70-6,730.60

Finding the Fourth Proportional to 8,285.80, 12,428.70 and 6,730.60

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Solution

The fourth proportional to 8,285.80, 12,428.70 and 6,730.60 is: 10,095.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,285.80 : 12,428.70 = 6,730.60 : x
  2. Step 2: Convert to fraction form
    8,285.80/12,428.70 = 6,730.60/x
  3. Step 3: Cross multiply
    8,285.80x = 12,428.70 × 6,730.60
  4. Step 4: Simplify right side
    8,285.80x = 83,652,608.22
  5. Step 5: Solve for x
    x = 83,652,608.22/8,285.80
  6. Step 6: Final answer
    x = 10,095.90

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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.