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Finding the Fourth Proportional to 6,386.47, 8,813.37 and 3,553.96

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Solution

The fourth proportional to 6,386.47, 8,813.37 and 3,553.96 is: 4,904.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,386.47 : 8,813.37 = 3,553.96 : x
  2. Step 2: Convert to fraction form
    6,386.47/8,813.37 = 3,553.96/x
  3. Step 3: Cross multiply
    6,386.47x = 8,813.37 × 3,553.96
  4. Step 4: Simplify right side
    6,386.47x = 31,322,346.68
  5. Step 5: Solve for x
    x = 31,322,346.68/6,386.47
  6. Step 6: Final answer
    x = 4,904.49

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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.