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Finding the Fourth Proportional to 8,462.64, 12,694.59 and 2,619.21

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Solution

The fourth proportional to 8,462.64, 12,694.59 and 2,619.21 is: 3,929.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,462.64 : 12,694.59 = 2,619.21 : x
  2. Step 2: Convert to fraction form
    8,462.64/12,694.59 = 2,619.21/x
  3. Step 3: Cross multiply
    8,462.64x = 12,694.59 × 2,619.21
  4. Step 4: Simplify right side
    8,462.64x = 33,249,797.07
  5. Step 5: Solve for x
    x = 33,249,797.07/8,462.64
  6. Step 6: Final answer
    x = 3,929.01

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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.