Home / 8,212.97-12,320.13-3,533.09

Finding the Fourth Proportional to 8,212.97, 12,320.13 and 3,533.09

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Solution

The fourth proportional to 8,212.97, 12,320.13 and 3,533.09 is: 5,299.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,212.97 : 12,320.13 = 3,533.09 : x
  2. Step 2: Convert to fraction form
    8,212.97/12,320.13 = 3,533.09/x
  3. Step 3: Cross multiply
    8,212.97x = 12,320.13 × 3,533.09
  4. Step 4: Simplify right side
    8,212.97x = 43,528,088.47
  5. Step 5: Solve for x
    x = 43,528,088.47/8,212.97
  6. Step 6: Final answer
    x = 5,299.92

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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.