Home / 1,673.72-2,311.96-1,285.56

Finding the Fourth Proportional to 1,673.72, 2,311.96 and 1,285.56

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Solution

The fourth proportional to 1,673.72, 2,311.96 and 1,285.56 is: 1,775.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,673.72 : 2,311.96 = 1,285.56 : x
  2. Step 2: Convert to fraction form
    1,673.72/2,311.96 = 1,285.56/x
  3. Step 3: Cross multiply
    1,673.72x = 2,311.96 × 1,285.56
  4. Step 4: Simplify right side
    1,673.72x = 2,972,163.30
  5. Step 5: Solve for x
    x = 2,972,163.30/1,673.72
  6. Step 6: Final answer
    x = 1,775.78

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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.