Home / 2,757.12-3,804.60-1,515.12

Finding the Fourth Proportional to 2,757.12, 3,804.60 and 1,515.12

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Solution

The fourth proportional to 2,757.12, 3,804.60 and 1,515.12 is: 2,090.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,757.12 : 3,804.60 = 1,515.12 : x
  2. Step 2: Convert to fraction form
    2,757.12/3,804.60 = 1,515.12/x
  3. Step 3: Cross multiply
    2,757.12x = 3,804.60 × 1,515.12
  4. Step 4: Simplify right side
    2,757.12x = 5,764,425.55
  5. Step 5: Solve for x
    x = 5,764,425.55/2,757.12
  6. Step 6: Final answer
    x = 2,090.74

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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.