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Finding the Fourth Proportional to 8,651.46, 12,960.09 and 5,720.88

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Solution

The fourth proportional to 8,651.46, 12,960.09 and 5,720.88 is: 8,570.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,651.46 : 12,960.09 = 5,720.88 : x
  2. Step 2: Convert to fraction form
    8,651.46/12,960.09 = 5,720.88/x
  3. Step 3: Cross multiply
    8,651.46x = 12,960.09 × 5,720.88
  4. Step 4: Simplify right side
    8,651.46x = 74,143,119.68
  5. Step 5: Solve for x
    x = 74,143,119.68/8,651.46
  6. Step 6: Final answer
    x = 8,570.01

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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.