Home / 4,778.28-7,169.09-1,858.63

Finding the Fourth Proportional to 4,778.28, 7,169.09 and 1,858.63

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Solution

The fourth proportional to 4,778.28, 7,169.09 and 1,858.63 is: 2,788.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,778.28 : 7,169.09 = 1,858.63 : x
  2. Step 2: Convert to fraction form
    4,778.28/7,169.09 = 1,858.63/x
  3. Step 3: Cross multiply
    4,778.28x = 7,169.09 × 1,858.63
  4. Step 4: Simplify right side
    4,778.28x = 13,324,685.75
  5. Step 5: Solve for x
    x = 13,324,685.75/4,778.28
  6. Step 6: Final answer
    x = 2,788.59

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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.