Home / 2,645.09-3,969.45-1,185.87

Finding the Fourth Proportional to 2,645.09, 3,969.45 and 1,185.87

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Solution

The fourth proportional to 2,645.09, 3,969.45 and 1,185.87 is: 1,779.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,645.09 : 3,969.45 = 1,185.87 : x
  2. Step 2: Convert to fraction form
    2,645.09/3,969.45 = 1,185.87/x
  3. Step 3: Cross multiply
    2,645.09x = 3,969.45 × 1,185.87
  4. Step 4: Simplify right side
    2,645.09x = 4,707,251.67
  5. Step 5: Solve for x
    x = 4,707,251.67/2,645.09
  6. Step 6: Final answer
    x = 1,779.62

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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.