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Finding the Fourth Proportional to 2,780.36, 4,171.14 and 832.58

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Solution

The fourth proportional to 2,780.36, 4,171.14 and 832.58 is: 1,249.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.36 : 4,171.14 = 832.58 : x
  2. Step 2: Convert to fraction form
    2,780.36/4,171.14 = 832.58/x
  3. Step 3: Cross multiply
    2,780.36x = 4,171.14 × 832.58
  4. Step 4: Simplify right side
    2,780.36x = 3,472,786.89
  5. Step 5: Solve for x
    x = 3,472,786.89/2,780.36
  6. Step 6: Final answer
    x = 1,249.04

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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.