Home / 7,801.22-11,705.08-3,421.82

Finding the Fourth Proportional to 7,801.22, 11,705.08 and 3,421.82

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Solution

The fourth proportional to 7,801.22, 11,705.08 and 3,421.82 is: 5,134.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,801.22 : 11,705.08 = 3,421.82 : x
  2. Step 2: Convert to fraction form
    7,801.22/11,705.08 = 3,421.82/x
  3. Step 3: Cross multiply
    7,801.22x = 11,705.08 × 3,421.82
  4. Step 4: Simplify right side
    7,801.22x = 40,052,676.85
  5. Step 5: Solve for x
    x = 40,052,676.85/7,801.22
  6. Step 6: Final answer
    x = 5,134.16

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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.