Home / 2,918.13-4,379.01-1,186.75

Finding the Fourth Proportional to 2,918.13, 4,379.01 and 1,186.75

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Solution

The fourth proportional to 2,918.13, 4,379.01 and 1,186.75 is: 1,780.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.13 : 4,379.01 = 1,186.75 : x
  2. Step 2: Convert to fraction form
    2,918.13/4,379.01 = 1,186.75/x
  3. Step 3: Cross multiply
    2,918.13x = 4,379.01 × 1,186.75
  4. Step 4: Simplify right side
    2,918.13x = 5,196,790.12
  5. Step 5: Solve for x
    x = 5,196,790.12/2,918.13
  6. Step 6: Final answer
    x = 1,780.86

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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.