Home / 7,999.14-11,987.43-3,777.89

Finding the Fourth Proportional to 7,999.14, 11,987.43 and 3,777.89

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Solution

The fourth proportional to 7,999.14, 11,987.43 and 3,777.89 is: 5,661.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,999.14 : 11,987.43 = 3,777.89 : x
  2. Step 2: Convert to fraction form
    7,999.14/11,987.43 = 3,777.89/x
  3. Step 3: Cross multiply
    7,999.14x = 11,987.43 × 3,777.89
  4. Step 4: Simplify right side
    7,999.14x = 45,287,221.89
  5. Step 5: Solve for x
    x = 45,287,221.89/7,999.14
  6. Step 6: Final answer
    x = 5,661.51

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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.