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Finding the Fourth Proportional to 2,556.87, 3,835.55 and 682.73

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Solution

The fourth proportional to 2,556.87, 3,835.55 and 682.73 is: 1,024.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,556.87 : 3,835.55 = 682.73 : x
  2. Step 2: Convert to fraction form
    2,556.87/3,835.55 = 682.73/x
  3. Step 3: Cross multiply
    2,556.87x = 3,835.55 × 682.73
  4. Step 4: Simplify right side
    2,556.87x = 2,618,641.96
  5. Step 5: Solve for x
    x = 2,618,641.96/2,556.87
  6. Step 6: Final answer
    x = 1,024.16

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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.