Home / 8,219.88-12,321.59-3,541.86

Finding the Fourth Proportional to 8,219.88, 12,321.59 and 3,541.86

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Solution

The fourth proportional to 8,219.88, 12,321.59 and 3,541.86 is: 5,309.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,219.88 : 12,321.59 = 3,541.86 : x
  2. Step 2: Convert to fraction form
    8,219.88/12,321.59 = 3,541.86/x
  3. Step 3: Cross multiply
    8,219.88x = 12,321.59 × 3,541.86
  4. Step 4: Simplify right side
    8,219.88x = 43,641,329.05
  5. Step 5: Solve for x
    x = 43,641,329.05/8,219.88
  6. Step 6: Final answer
    x = 5,309.24

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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.