Home / 5,186.38-7,779.66-1,290.82

Finding the Fourth Proportional to 5,186.38, 7,779.66 and 1,290.82

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Solution

The fourth proportional to 5,186.38, 7,779.66 and 1,290.82 is: 1,936.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.38 : 7,779.66 = 1,290.82 : x
  2. Step 2: Convert to fraction form
    5,186.38/7,779.66 = 1,290.82/x
  3. Step 3: Cross multiply
    5,186.38x = 7,779.66 × 1,290.82
  4. Step 4: Simplify right side
    5,186.38x = 10,042,140.72
  5. Step 5: Solve for x
    x = 10,042,140.72/5,186.38
  6. Step 6: Final answer
    x = 1,936.25

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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.