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Finding the Fourth Proportional to 3,133.88, 4,700.82 and 825.38

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Solution

The fourth proportional to 3,133.88, 4,700.82 and 825.38 is: 1,238.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,133.88 : 4,700.82 = 825.38 : x
  2. Step 2: Convert to fraction form
    3,133.88/4,700.82 = 825.38/x
  3. Step 3: Cross multiply
    3,133.88x = 4,700.82 × 825.38
  4. Step 4: Simplify right side
    3,133.88x = 3,879,962.81
  5. Step 5: Solve for x
    x = 3,879,962.81/3,133.88
  6. Step 6: Final answer
    x = 1,238.07

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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.