Home / 3,842.10-5,301.90-2,163.60

Finding the Fourth Proportional to 3,842.10, 5,301.90 and 2,163.60

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Solution

The fourth proportional to 3,842.10, 5,301.90 and 2,163.60 is: 2,985.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,842.10 : 5,301.90 = 2,163.60 : x
  2. Step 2: Convert to fraction form
    3,842.10/5,301.90 = 2,163.60/x
  3. Step 3: Cross multiply
    3,842.10x = 5,301.90 × 2,163.60
  4. Step 4: Simplify right side
    3,842.10x = 11,471,190.84
  5. Step 5: Solve for x
    x = 11,471,190.84/3,842.10
  6. Step 6: Final answer
    x = 2,985.66

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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.