Home / 8,315.02-12,467.67-3,121.30

Finding the Fourth Proportional to 8,315.02, 12,467.67 and 3,121.30

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Solution

The fourth proportional to 8,315.02, 12,467.67 and 3,121.30 is: 4,680.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,315.02 : 12,467.67 = 3,121.30 : x
  2. Step 2: Convert to fraction form
    8,315.02/12,467.67 = 3,121.30/x
  3. Step 3: Cross multiply
    8,315.02x = 12,467.67 × 3,121.30
  4. Step 4: Simplify right side
    8,315.02x = 38,915,338.37
  5. Step 5: Solve for x
    x = 38,915,338.37/8,315.02
  6. Step 6: Final answer
    x = 4,680.13

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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.