Home / 3,842.20-5,302.70-2,163.68

Finding the Fourth Proportional to 3,842.20, 5,302.70 and 2,163.68

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Solution

The fourth proportional to 3,842.20, 5,302.70 and 2,163.68 is: 2,986.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,842.20 : 5,302.70 = 2,163.68 : x
  2. Step 2: Convert to fraction form
    3,842.20/5,302.70 = 2,163.68/x
  3. Step 3: Cross multiply
    3,842.20x = 5,302.70 × 2,163.68
  4. Step 4: Simplify right side
    3,842.20x = 11,473,345.94
  5. Step 5: Solve for x
    x = 11,473,345.94/3,842.20
  6. Step 6: Final answer
    x = 2,986.14

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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.