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Finding the Fourth Proportional to 8,694.10, 13,041.28 and 2,120.41

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Solution

The fourth proportional to 8,694.10, 13,041.28 and 2,120.41 is: 3,180.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,694.10 : 13,041.28 = 2,120.41 : x
  2. Step 2: Convert to fraction form
    8,694.10/13,041.28 = 2,120.41/x
  3. Step 3: Cross multiply
    8,694.10x = 13,041.28 × 2,120.41
  4. Step 4: Simplify right side
    8,694.10x = 27,652,790.02
  5. Step 5: Solve for x
    x = 27,652,790.02/8,694.10
  6. Step 6: Final answer
    x = 3,180.64

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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.