Home / 6,813.57-10,220.79-1,815.86

Finding the Fourth Proportional to 6,813.57, 10,220.79 and 1,815.86

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Solution

The fourth proportional to 6,813.57, 10,220.79 and 1,815.86 is: 2,723.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,813.57 : 10,220.79 = 1,815.86 : x
  2. Step 2: Convert to fraction form
    6,813.57/10,220.79 = 1,815.86/x
  3. Step 3: Cross multiply
    6,813.57x = 10,220.79 × 1,815.86
  4. Step 4: Simplify right side
    6,813.57x = 18,559,523.73
  5. Step 5: Solve for x
    x = 18,559,523.73/6,813.57
  6. Step 6: Final answer
    x = 2,723.91

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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.