Home / 7,983.66-11,977.86-4,090.80

Finding the Fourth Proportional to 7,983.66, 11,977.86 and 4,090.80

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Solution

The fourth proportional to 7,983.66, 11,977.86 and 4,090.80 is: 6,137.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,983.66 : 11,977.86 = 4,090.80 : x
  2. Step 2: Convert to fraction form
    7,983.66/11,977.86 = 4,090.80/x
  3. Step 3: Cross multiply
    7,983.66x = 11,977.86 × 4,090.80
  4. Step 4: Simplify right side
    7,983.66x = 48,999,029.69
  5. Step 5: Solve for x
    x = 48,999,029.69/7,983.66
  6. Step 6: Final answer
    x = 6,137.41

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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.