Home / 7,989.74-11,984.60-2,146.35

Finding the Fourth Proportional to 7,989.74, 11,984.60 and 2,146.35

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Solution

The fourth proportional to 7,989.74, 11,984.60 and 2,146.35 is: 3,219.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.74 : 11,984.60 = 2,146.35 : x
  2. Step 2: Convert to fraction form
    7,989.74/11,984.60 = 2,146.35/x
  3. Step 3: Cross multiply
    7,989.74x = 11,984.60 × 2,146.35
  4. Step 4: Simplify right side
    7,989.74x = 25,723,091.65
  5. Step 5: Solve for x
    x = 25,723,091.65/7,989.74
  6. Step 6: Final answer
    x = 3,219.52

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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.