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Finding the Fourth Proportional to 2,113.54, 3,170.29 and 574.54

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Solution

The fourth proportional to 2,113.54, 3,170.29 and 574.54 is: 861.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,113.54 : 3,170.29 = 574.54 : x
  2. Step 2: Convert to fraction form
    2,113.54/3,170.29 = 574.54/x
  3. Step 3: Cross multiply
    2,113.54x = 3,170.29 × 574.54
  4. Step 4: Simplify right side
    2,113.54x = 1,821,458.42
  5. Step 5: Solve for x
    x = 1,821,458.42/2,113.54
  6. Step 6: Final answer
    x = 861.80

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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.