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Finding the Fourth Proportional to 2,113.56, 3,170.34 and 574.56

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Solution

The fourth proportional to 2,113.56, 3,170.34 and 574.56 is: 861.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,113.56 : 3,170.34 = 574.56 : x
  2. Step 2: Convert to fraction form
    2,113.56/3,170.34 = 574.56/x
  3. Step 3: Cross multiply
    2,113.56x = 3,170.34 × 574.56
  4. Step 4: Simplify right side
    2,113.56x = 1,821,550.55
  5. Step 5: Solve for x
    x = 1,821,550.55/2,113.56
  6. Step 6: Final answer
    x = 861.84

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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.