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Finding the Fourth Proportional to 6,293.86, 8,686.20 and 3,936.76

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Solution

The fourth proportional to 6,293.86, 8,686.20 and 3,936.76 is: 5,433.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,293.86 : 8,686.20 = 3,936.76 : x
  2. Step 2: Convert to fraction form
    6,293.86/8,686.20 = 3,936.76/x
  3. Step 3: Cross multiply
    6,293.86x = 8,686.20 × 3,936.76
  4. Step 4: Simplify right side
    6,293.86x = 34,195,477.76
  5. Step 5: Solve for x
    x = 34,195,477.76/6,293.86
  6. Step 6: Final answer
    x = 5,433.15

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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.