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Finding the Fourth Proportional to 11,080.32, 16,620.16 and 2,872.32

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Solution

The fourth proportional to 11,080.32, 16,620.16 and 2,872.32 is: 4,308.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,080.32 : 16,620.16 = 2,872.32 : x
  2. Step 2: Convert to fraction form
    11,080.32/16,620.16 = 2,872.32/x
  3. Step 3: Cross multiply
    11,080.32x = 16,620.16 × 2,872.32
  4. Step 4: Simplify right side
    11,080.32x = 47,738,417.97
  5. Step 5: Solve for x
    x = 47,738,417.97/11,080.32
  6. Step 6: Final answer
    x = 4,308.40

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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.