Home / 3,515.12-5,270.88-1,872.56

Finding the Fourth Proportional to 3,515.12, 5,270.88 and 1,872.56

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Solution

The fourth proportional to 3,515.12, 5,270.88 and 1,872.56 is: 2,807.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,515.12 : 5,270.88 = 1,872.56 : x
  2. Step 2: Convert to fraction form
    3,515.12/5,270.88 = 1,872.56/x
  3. Step 3: Cross multiply
    3,515.12x = 5,270.88 × 1,872.56
  4. Step 4: Simplify right side
    3,515.12x = 9,870,039.05
  5. Step 5: Solve for x
    x = 9,870,039.05/3,515.12
  6. Step 6: Final answer
    x = 2,807.88

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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.