Home / 2,181.28-3,268.70-1,011.64

Finding the Fourth Proportional to 2,181.28, 3,268.70 and 1,011.64

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Solution

The fourth proportional to 2,181.28, 3,268.70 and 1,011.64 is: 1,515.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.28 : 3,268.70 = 1,011.64 : x
  2. Step 2: Convert to fraction form
    2,181.28/3,268.70 = 1,011.64/x
  3. Step 3: Cross multiply
    2,181.28x = 3,268.70 × 1,011.64
  4. Step 4: Simplify right side
    2,181.28x = 3,306,747.67
  5. Step 5: Solve for x
    x = 3,306,747.67/2,181.28
  6. Step 6: Final answer
    x = 1,515.97

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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.