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Finding the Fourth Proportional to 8,576.58, 12,865.38 and 3,311.63

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Solution

The fourth proportional to 8,576.58, 12,865.38 and 3,311.63 is: 4,967.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,576.58 : 12,865.38 = 3,311.63 : x
  2. Step 2: Convert to fraction form
    8,576.58/12,865.38 = 3,311.63/x
  3. Step 3: Cross multiply
    8,576.58x = 12,865.38 × 3,311.63
  4. Step 4: Simplify right side
    8,576.58x = 42,605,378.37
  5. Step 5: Solve for x
    x = 42,605,378.37/8,576.58
  6. Step 6: Final answer
    x = 4,967.64

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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.