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Finding the Fourth Proportional to 6,308.15, 8,703.45 and 3,789.45

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Solution

The fourth proportional to 6,308.15, 8,703.45 and 3,789.45 is: 5,228.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,308.15 : 8,703.45 = 3,789.45 : x
  2. Step 2: Convert to fraction form
    6,308.15/8,703.45 = 3,789.45/x
  3. Step 3: Cross multiply
    6,308.15x = 8,703.45 × 3,789.45
  4. Step 4: Simplify right side
    6,308.15x = 32,981,288.60
  5. Step 5: Solve for x
    x = 32,981,288.60/6,308.15
  6. Step 6: Final answer
    x = 5,228.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.