Home / 5,740.12-7,912.38-3,749.68

Finding the Fourth Proportional to 5,740.12, 7,912.38 and 3,749.68

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Solution

The fourth proportional to 5,740.12, 7,912.38 and 3,749.68 is: 5,168.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,740.12 : 7,912.38 = 3,749.68 : x
  2. Step 2: Convert to fraction form
    5,740.12/7,912.38 = 3,749.68/x
  3. Step 3: Cross multiply
    5,740.12x = 7,912.38 × 3,749.68
  4. Step 4: Simplify right side
    5,740.12x = 29,668,893.04
  5. Step 5: Solve for x
    x = 29,668,893.04/5,740.12
  6. Step 6: Final answer
    x = 5,168.69

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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.