Home / 8,221.02-12,328.29-3,289.74

Finding the Fourth Proportional to 8,221.02, 12,328.29 and 3,289.74

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Solution

The fourth proportional to 8,221.02, 12,328.29 and 3,289.74 is: 4,933.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,221.02 : 12,328.29 = 3,289.74 : x
  2. Step 2: Convert to fraction form
    8,221.02/12,328.29 = 3,289.74/x
  3. Step 3: Cross multiply
    8,221.02x = 12,328.29 × 3,289.74
  4. Step 4: Simplify right side
    8,221.02x = 40,556,868.74
  5. Step 5: Solve for x
    x = 40,556,868.74/8,221.02
  6. Step 6: Final answer
    x = 4,933.31

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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.