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Finding the Fourth Proportional to 7,856.87, 11,786.02 and 2,310.19

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Solution

The fourth proportional to 7,856.87, 11,786.02 and 2,310.19 is: 3,465.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,856.87 : 11,786.02 = 2,310.19 : x
  2. Step 2: Convert to fraction form
    7,856.87/11,786.02 = 2,310.19/x
  3. Step 3: Cross multiply
    7,856.87x = 11,786.02 × 2,310.19
  4. Step 4: Simplify right side
    7,856.87x = 27,227,910.30
  5. Step 5: Solve for x
    x = 27,227,910.30/7,856.87
  6. Step 6: Final answer
    x = 3,465.49

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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.