Home / 8,421.06-12,630.87-2,874.54

Finding the Fourth Proportional to 8,421.06, 12,630.87 and 2,874.54

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Solution

The fourth proportional to 8,421.06, 12,630.87 and 2,874.54 is: 4,311.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.06 : 12,630.87 = 2,874.54 : x
  2. Step 2: Convert to fraction form
    8,421.06/12,630.87 = 2,874.54/x
  3. Step 3: Cross multiply
    8,421.06x = 12,630.87 × 2,874.54
  4. Step 4: Simplify right side
    8,421.06x = 36,307,941.05
  5. Step 5: Solve for x
    x = 36,307,941.05/8,421.06
  6. Step 6: Final answer
    x = 4,311.56

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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.