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Finding the Fourth Proportional to 8,604.90, 12,905.93 and 2,760.75

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Solution

The fourth proportional to 8,604.90, 12,905.93 and 2,760.75 is: 4,140.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,604.90 : 12,905.93 = 2,760.75 : x
  2. Step 2: Convert to fraction form
    8,604.90/12,905.93 = 2,760.75/x
  3. Step 3: Cross multiply
    8,604.90x = 12,905.93 × 2,760.75
  4. Step 4: Simplify right side
    8,604.90x = 35,630,032.44
  5. Step 5: Solve for x
    x = 35,630,032.44/8,604.90
  6. Step 6: Final answer
    x = 4,140.67

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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.