Home / 2,160.96-3,241.92-1,120.64

Finding the Fourth Proportional to 2,160.96, 3,241.92 and 1,120.64

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Solution

The fourth proportional to 2,160.96, 3,241.92 and 1,120.64 is: 1,681.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.96 : 3,241.92 = 1,120.64 : x
  2. Step 2: Convert to fraction form
    2,160.96/3,241.92 = 1,120.64/x
  3. Step 3: Cross multiply
    2,160.96x = 3,241.92 × 1,120.64
  4. Step 4: Simplify right side
    2,160.96x = 3,633,025.23
  5. Step 5: Solve for x
    x = 3,633,025.23/2,160.96
  6. Step 6: Final answer
    x = 1,681.21

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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.