Home / 2,507.12-3,760.70-1,120.12

Finding the Fourth Proportional to 2,507.12, 3,760.70 and 1,120.12

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Solution

The fourth proportional to 2,507.12, 3,760.70 and 1,120.12 is: 1,680.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,507.12 : 3,760.70 = 1,120.12 : x
  2. Step 2: Convert to fraction form
    2,507.12/3,760.70 = 1,120.12/x
  3. Step 3: Cross multiply
    2,507.12x = 3,760.70 × 1,120.12
  4. Step 4: Simplify right side
    2,507.12x = 4,212,435.28
  5. Step 5: Solve for x
    x = 4,212,435.28/2,507.12
  6. Step 6: Final answer
    x = 1,680.19

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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.