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Finding the Fourth Proportional to 3,786.67, 5,208.26 and 3,038.99

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Solution

The fourth proportional to 3,786.67, 5,208.26 and 3,038.99 is: 4,179.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,786.67 : 5,208.26 = 3,038.99 : x
  2. Step 2: Convert to fraction form
    3,786.67/5,208.26 = 3,038.99/x
  3. Step 3: Cross multiply
    3,786.67x = 5,208.26 × 3,038.99
  4. Step 4: Simplify right side
    3,786.67x = 15,827,808.82
  5. Step 5: Solve for x
    x = 15,827,808.82/3,786.67
  6. Step 6: Final answer
    x = 4,179.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.