Home / 4,128.75-5,693.90-2,711.87

Finding the Fourth Proportional to 4,128.75, 5,693.90 and 2,711.87

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Solution

The fourth proportional to 4,128.75, 5,693.90 and 2,711.87 is: 3,739.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128.75 : 5,693.90 = 2,711.87 : x
  2. Step 2: Convert to fraction form
    4,128.75/5,693.90 = 2,711.87/x
  3. Step 3: Cross multiply
    4,128.75x = 5,693.90 × 2,711.87
  4. Step 4: Simplify right side
    4,128.75x = 15,441,074.56
  5. Step 5: Solve for x
    x = 15,441,074.56/4,128.75
  6. Step 6: Final answer
    x = 3,739.90

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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.