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Finding the Fourth Proportional to 3,238.83, 4,860.39 and 1,779

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Solution

The fourth proportional to 3,238.83, 4,860.39 and 1,779 is: 2,669.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,238.83 : 4,860.39 = 1,779 : x
  2. Step 2: Convert to fraction form
    3,238.83/4,860.39 = 1,779/x
  3. Step 3: Cross multiply
    3,238.83x = 4,860.39 × 1,779
  4. Step 4: Simplify right side
    3,238.83x = 8,646,633.81
  5. Step 5: Solve for x
    x = 8,646,633.81/3,238.83
  6. Step 6: Final answer
    x = 2,669.68

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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.