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Finding the Fourth Proportional to 6,789.80, 10,178.92 and 3,090.73

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Solution

The fourth proportional to 6,789.80, 10,178.92 and 3,090.73 is: 4,633.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,789.80 : 10,178.92 = 3,090.73 : x
  2. Step 2: Convert to fraction form
    6,789.80/10,178.92 = 3,090.73/x
  3. Step 3: Cross multiply
    6,789.80x = 10,178.92 × 3,090.73
  4. Step 4: Simplify right side
    6,789.80x = 31,460,293.41
  5. Step 5: Solve for x
    x = 31,460,293.41/6,789.80
  6. Step 6: Final answer
    x = 4,633.46

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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.