Home / 11,905.35-17,859.84-3,140.94

Finding the Fourth Proportional to 11,905.35, 17,859.84 and 3,140.94

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Solution

The fourth proportional to 11,905.35, 17,859.84 and 3,140.94 is: 4,711.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,905.35 : 17,859.84 = 3,140.94 : x
  2. Step 2: Convert to fraction form
    11,905.35/17,859.84 = 3,140.94/x
  3. Step 3: Cross multiply
    11,905.35x = 17,859.84 × 3,140.94
  4. Step 4: Simplify right side
    11,905.35x = 56,096,685.85
  5. Step 5: Solve for x
    x = 56,096,685.85/11,905.35
  6. Step 6: Final answer
    x = 4,711.89

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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.