Home / 3,922-5,885.70-1,613.50

Finding the Fourth Proportional to 3,922, 5,885.70 and 1,613.50

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Solution

The fourth proportional to 3,922, 5,885.70 and 1,613.50 is: 2,421.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,922 : 5,885.70 = 1,613.50 : x
  2. Step 2: Convert to fraction form
    3,922/5,885.70 = 1,613.50/x
  3. Step 3: Cross multiply
    3,922x = 5,885.70 × 1,613.50
  4. Step 4: Simplify right side
    3,922x = 9,496,576.95
  5. Step 5: Solve for x
    x = 9,496,576.95/3,922
  6. Step 6: Final answer
    x = 2,421.36

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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.