Home / 5,277.22-7,917.95-1,991.24

Finding the Fourth Proportional to 5,277.22, 7,917.95 and 1,991.24

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Solution

The fourth proportional to 5,277.22, 7,917.95 and 1,991.24 is: 2,987.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,277.22 : 7,917.95 = 1,991.24 : x
  2. Step 2: Convert to fraction form
    5,277.22/7,917.95 = 1,991.24/x
  3. Step 3: Cross multiply
    5,277.22x = 7,917.95 × 1,991.24
  4. Step 4: Simplify right side
    5,277.22x = 15,766,538.76
  5. Step 5: Solve for x
    x = 15,766,538.76/5,277.22
  6. Step 6: Final answer
    x = 2,987.66

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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.