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Finding the Fourth Proportional to 7,863.88, 11,800.62 and 3,246.28

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Solution

The fourth proportional to 7,863.88, 11,800.62 and 3,246.28 is: 4,871.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,863.88 : 11,800.62 = 3,246.28 : x
  2. Step 2: Convert to fraction form
    7,863.88/11,800.62 = 3,246.28/x
  3. Step 3: Cross multiply
    7,863.88x = 11,800.62 × 3,246.28
  4. Step 4: Simplify right side
    7,863.88x = 38,308,116.69
  5. Step 5: Solve for x
    x = 38,308,116.69/7,863.88
  6. Step 6: Final answer
    x = 4,871.40

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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.