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Finding the Fourth Proportional to 11,807.70, 17,710.14 and 3,910.22

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Solution

The fourth proportional to 11,807.70, 17,710.14 and 3,910.22 is: 5,864.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,807.70 : 17,710.14 = 3,910.22 : x
  2. Step 2: Convert to fraction form
    11,807.70/17,710.14 = 3,910.22/x
  3. Step 3: Cross multiply
    11,807.70x = 17,710.14 × 3,910.22
  4. Step 4: Simplify right side
    11,807.70x = 69,250,543.63
  5. Step 5: Solve for x
    x = 69,250,543.63/11,807.70
  6. Step 6: Final answer
    x = 5,864.86

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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.