Home / 8,220.51-12,329.24-2,672.21

Finding the Fourth Proportional to 8,220.51, 12,329.24 and 2,672.21

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Solution

The fourth proportional to 8,220.51, 12,329.24 and 2,672.21 is: 4,007.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,220.51 : 12,329.24 = 2,672.21 : x
  2. Step 2: Convert to fraction form
    8,220.51/12,329.24 = 2,672.21/x
  3. Step 3: Cross multiply
    8,220.51x = 12,329.24 × 2,672.21
  4. Step 4: Simplify right side
    8,220.51x = 32,946,243.41
  5. Step 5: Solve for x
    x = 32,946,243.41/8,220.51
  6. Step 6: Final answer
    x = 4,007.81

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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.