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Finding the Fourth Proportional to 2,759.85, 3,790.47 and 2,556.93

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Solution

The fourth proportional to 2,759.85, 3,790.47 and 2,556.93 is: 3,511.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,759.85 : 3,790.47 = 2,556.93 : x
  2. Step 2: Convert to fraction form
    2,759.85/3,790.47 = 2,556.93/x
  3. Step 3: Cross multiply
    2,759.85x = 3,790.47 × 2,556.93
  4. Step 4: Simplify right side
    2,759.85x = 9,691,966.46
  5. Step 5: Solve for x
    x = 9,691,966.46/2,759.85
  6. Step 6: Final answer
    x = 3,511.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.