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Finding the Fourth Proportional to 11,861.70, 17,801.19 and 4,077.06

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Solution

The fourth proportional to 11,861.70, 17,801.19 and 4,077.06 is: 6,118.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,861.70 : 17,801.19 = 4,077.06 : x
  2. Step 2: Convert to fraction form
    11,861.70/17,801.19 = 4,077.06/x
  3. Step 3: Cross multiply
    11,861.70x = 17,801.19 × 4,077.06
  4. Step 4: Simplify right side
    11,861.70x = 72,576,519.70
  5. Step 5: Solve for x
    x = 72,576,519.70/11,861.70
  6. Step 6: Final answer
    x = 6,118.56

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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.