Home / 4,140.96-5,715.60-2,743.20

Finding the Fourth Proportional to 4,140.96, 5,715.60 and 2,743.20

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Solution

The fourth proportional to 4,140.96, 5,715.60 and 2,743.20 is: 3,786.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,140.96 : 5,715.60 = 2,743.20 : x
  2. Step 2: Convert to fraction form
    4,140.96/5,715.60 = 2,743.20/x
  3. Step 3: Cross multiply
    4,140.96x = 5,715.60 × 2,743.20
  4. Step 4: Simplify right side
    4,140.96x = 15,679,033.92
  5. Step 5: Solve for x
    x = 15,679,033.92/4,140.96
  6. Step 6: Final answer
    x = 3,786.33

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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.