Home / 8,212.80-12,322.71-3,829.62

Finding the Fourth Proportional to 8,212.80, 12,322.71 and 3,829.62

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Solution

The fourth proportional to 8,212.80, 12,322.71 and 3,829.62 is: 5,746.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,212.80 : 12,322.71 = 3,829.62 : x
  2. Step 2: Convert to fraction form
    8,212.80/12,322.71 = 3,829.62/x
  3. Step 3: Cross multiply
    8,212.80x = 12,322.71 × 3,829.62
  4. Step 4: Simplify right side
    8,212.80x = 47,191,296.67
  5. Step 5: Solve for x
    x = 47,191,296.67/8,212.80
  6. Step 6: Final answer
    x = 5,746.07

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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.