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Finding the Fourth Proportional to 2,119.96, 3,179.94 and 580.96

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Solution

The fourth proportional to 2,119.96, 3,179.94 and 580.96 is: 871.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.96 : 3,179.94 = 580.96 : x
  2. Step 2: Convert to fraction form
    2,119.96/3,179.94 = 580.96/x
  3. Step 3: Cross multiply
    2,119.96x = 3,179.94 × 580.96
  4. Step 4: Simplify right side
    2,119.96x = 1,847,417.94
  5. Step 5: Solve for x
    x = 1,847,417.94/2,119.96
  6. Step 6: Final answer
    x = 871.44

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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.