Home / 7,910.40-11,856.18-3,687.96

Finding the Fourth Proportional to 7,910.40, 11,856.18 and 3,687.96

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Solution

The fourth proportional to 7,910.40, 11,856.18 and 3,687.96 is: 5,527.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,910.40 : 11,856.18 = 3,687.96 : x
  2. Step 2: Convert to fraction form
    7,910.40/11,856.18 = 3,687.96/x
  3. Step 3: Cross multiply
    7,910.40x = 11,856.18 × 3,687.96
  4. Step 4: Simplify right side
    7,910.40x = 43,725,117.59
  5. Step 5: Solve for x
    x = 43,725,117.59/7,910.40
  6. Step 6: Final answer
    x = 5,527.55

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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.