Home / 9,315.90-13,976.76-2,991.75

Finding the Fourth Proportional to 9,315.90, 13,976.76 and 2,991.75

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Solution

The fourth proportional to 9,315.90, 13,976.76 and 2,991.75 is: 4,488.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,315.90 : 13,976.76 = 2,991.75 : x
  2. Step 2: Convert to fraction form
    9,315.90/13,976.76 = 2,991.75/x
  3. Step 3: Cross multiply
    9,315.90x = 13,976.76 × 2,991.75
  4. Step 4: Simplify right side
    9,315.90x = 41,814,971.73
  5. Step 5: Solve for x
    x = 41,814,971.73/9,315.90
  6. Step 6: Final answer
    x = 4,488.56

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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.