Home / 8,879.58-13,317.05-2,638.12

Finding the Fourth Proportional to 8,879.58, 13,317.05 and 2,638.12

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Solution

The fourth proportional to 8,879.58, 13,317.05 and 2,638.12 is: 3,956.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.58 : 13,317.05 = 2,638.12 : x
  2. Step 2: Convert to fraction form
    8,879.58/13,317.05 = 2,638.12/x
  3. Step 3: Cross multiply
    8,879.58x = 13,317.05 × 2,638.12
  4. Step 4: Simplify right side
    8,879.58x = 35,131,975.95
  5. Step 5: Solve for x
    x = 35,131,975.95/8,879.58
  6. Step 6: Final answer
    x = 3,956.49

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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.