Home / 8,121.01-12,172.26-3,438.10

Finding the Fourth Proportional to 8,121.01, 12,172.26 and 3,438.10

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Solution

The fourth proportional to 8,121.01, 12,172.26 and 3,438.10 is: 5,153.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.01 : 12,172.26 = 3,438.10 : x
  2. Step 2: Convert to fraction form
    8,121.01/12,172.26 = 3,438.10/x
  3. Step 3: Cross multiply
    8,121.01x = 12,172.26 × 3,438.10
  4. Step 4: Simplify right side
    8,121.01x = 41,849,387.41
  5. Step 5: Solve for x
    x = 41,849,387.41/8,121.01
  6. Step 6: Final answer
    x = 5,153.22

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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.