Home / 5,399.30-8,078.75-3,842.89

Finding the Fourth Proportional to 5,399.30, 8,078.75 and 3,842.89

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Solution

The fourth proportional to 5,399.30, 8,078.75 and 3,842.89 is: 5,749.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,399.30 : 8,078.75 = 3,842.89 : x
  2. Step 2: Convert to fraction form
    5,399.30/8,078.75 = 3,842.89/x
  3. Step 3: Cross multiply
    5,399.30x = 8,078.75 × 3,842.89
  4. Step 4: Simplify right side
    5,399.30x = 31,045,708.18
  5. Step 5: Solve for x
    x = 31,045,708.18/5,399.30
  6. Step 6: Final answer
    x = 5,749.95

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1.5x scale

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.