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Finding the Fourth Proportional to 6,385.71, 8,812.83 and 3,553.65

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Solution

The fourth proportional to 6,385.71, 8,812.83 and 3,553.65 is: 4,904.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,385.71 : 8,812.83 = 3,553.65 : x
  2. Step 2: Convert to fraction form
    6,385.71/8,812.83 = 3,553.65/x
  3. Step 3: Cross multiply
    6,385.71x = 8,812.83 × 3,553.65
  4. Step 4: Simplify right side
    6,385.71x = 31,317,713.33
  5. Step 5: Solve for x
    x = 31,317,713.33/6,385.71
  6. Step 6: Final answer
    x = 4,904.34

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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.