Home / 7,985.85-11,984.45-2,791.77

Finding the Fourth Proportional to 7,985.85, 11,984.45 and 2,791.77

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Solution

The fourth proportional to 7,985.85, 11,984.45 and 2,791.77 is: 4,189.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,985.85 : 11,984.45 = 2,791.77 : x
  2. Step 2: Convert to fraction form
    7,985.85/11,984.45 = 2,791.77/x
  3. Step 3: Cross multiply
    7,985.85x = 11,984.45 × 2,791.77
  4. Step 4: Simplify right side
    7,985.85x = 33,457,814.02
  5. Step 5: Solve for x
    x = 33,457,814.02/7,985.85
  6. Step 6: Final answer
    x = 4,189.64

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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.