Home / 8,121.23-12,172.04-3,955.00

Finding the Fourth Proportional to 8,121.23, 12,172.04 and 3,955.00

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Solution

The fourth proportional to 8,121.23, 12,172.04 and 3,955.00 is: 5,927.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.23 : 12,172.04 = 3,955.00 : x
  2. Step 2: Convert to fraction form
    8,121.23/12,172.04 = 3,955.00/x
  3. Step 3: Cross multiply
    8,121.23x = 12,172.04 × 3,955.00
  4. Step 4: Simplify right side
    8,121.23x = 48,140,382.83
  5. Step 5: Solve for x
    x = 48,140,382.83/8,121.23
  6. Step 6: Final answer
    x = 5,927.72

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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.