Home / 5,186.48-7,779.77-1,290.88

Finding the Fourth Proportional to 5,186.48, 7,779.77 and 1,290.88

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Solution

The fourth proportional to 5,186.48, 7,779.77 and 1,290.88 is: 1,936.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.48 : 7,779.77 = 1,290.88 : x
  2. Step 2: Convert to fraction form
    5,186.48/7,779.77 = 1,290.88/x
  3. Step 3: Cross multiply
    5,186.48x = 7,779.77 × 1,290.88
  4. Step 4: Simplify right side
    5,186.48x = 10,042,752.77
  5. Step 5: Solve for x
    x = 10,042,752.77/5,186.48
  6. Step 6: Final answer
    x = 1,936.33

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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.