Home / 3,984.21-5,498.64-2,305.59

Finding the Fourth Proportional to 3,984.21, 5,498.64 and 2,305.59

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Solution

The fourth proportional to 3,984.21, 5,498.64 and 2,305.59 is: 3,181.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,984.21 : 5,498.64 = 2,305.59 : x
  2. Step 2: Convert to fraction form
    3,984.21/5,498.64 = 2,305.59/x
  3. Step 3: Cross multiply
    3,984.21x = 5,498.64 × 2,305.59
  4. Step 4: Simplify right side
    3,984.21x = 12,677,609.40
  5. Step 5: Solve for x
    x = 12,677,609.40/3,984.21
  6. Step 6: Final answer
    x = 3,181.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.