Home / 7,840.05-11,760.12-1,996.68

Finding the Fourth Proportional to 7,840.05, 11,760.12 and 1,996.68

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Solution

The fourth proportional to 7,840.05, 11,760.12 and 1,996.68 is: 2,995.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,840.05 : 11,760.12 = 1,996.68 : x
  2. Step 2: Convert to fraction form
    7,840.05/11,760.12 = 1,996.68/x
  3. Step 3: Cross multiply
    7,840.05x = 11,760.12 × 1,996.68
  4. Step 4: Simplify right side
    7,840.05x = 23,481,196.40
  5. Step 5: Solve for x
    x = 23,481,196.40/7,840.05
  6. Step 6: Final answer
    x = 2,995.03

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Double scale
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1.5x scale

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.