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Finding the Fourth Proportional to 5,765.76, 8,647.44 and 3,454.56

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Solution

The fourth proportional to 5,765.76, 8,647.44 and 3,454.56 is: 5,181.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,765.76 : 8,647.44 = 3,454.56 : x
  2. Step 2: Convert to fraction form
    5,765.76/8,647.44 = 3,454.56/x
  3. Step 3: Cross multiply
    5,765.76x = 8,647.44 × 3,454.56
  4. Step 4: Simplify right side
    5,765.76x = 29,873,100.33
  5. Step 5: Solve for x
    x = 29,873,100.33/5,765.76
  6. Step 6: Final answer
    x = 5,181.12

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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.