Home / 8,451.90-12,675.78-3,186.54

Finding the Fourth Proportional to 8,451.90, 12,675.78 and 3,186.54

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Solution

The fourth proportional to 8,451.90, 12,675.78 and 3,186.54 is: 4,779.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,451.90 : 12,675.78 = 3,186.54 : x
  2. Step 2: Convert to fraction form
    8,451.90/12,675.78 = 3,186.54/x
  3. Step 3: Cross multiply
    8,451.90x = 12,675.78 × 3,186.54
  4. Step 4: Simplify right side
    8,451.90x = 40,391,880.00
  5. Step 5: Solve for x
    x = 40,391,880.00/8,451.90
  6. Step 6: Final answer
    x = 4,779.03

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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.