Home / 2,157.12-3,236.19-676.29

Finding the Fourth Proportional to 2,157.12, 3,236.19 and 676.29

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Solution

The fourth proportional to 2,157.12, 3,236.19 and 676.29 is: 1,014.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157.12 : 3,236.19 = 676.29 : x
  2. Step 2: Convert to fraction form
    2,157.12/3,236.19 = 676.29/x
  3. Step 3: Cross multiply
    2,157.12x = 3,236.19 × 676.29
  4. Step 4: Simplify right side
    2,157.12x = 2,188,602.94
  5. Step 5: Solve for x
    x = 2,188,602.94/2,157.12
  6. Step 6: Final answer
    x = 1,014.59

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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.