Home / 2,786.81-3,845.09-1,779.17

Finding the Fourth Proportional to 2,786.81, 3,845.09 and 1,779.17

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Solution

The fourth proportional to 2,786.81, 3,845.09 and 1,779.17 is: 2,454.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.81 : 3,845.09 = 1,779.17 : x
  2. Step 2: Convert to fraction form
    2,786.81/3,845.09 = 1,779.17/x
  3. Step 3: Cross multiply
    2,786.81x = 3,845.09 × 1,779.17
  4. Step 4: Simplify right side
    2,786.81x = 6,841,059.88
  5. Step 5: Solve for x
    x = 6,841,059.88/2,786.81
  6. Step 6: Final answer
    x = 2,454.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.