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Finding the Fourth Proportional to 11,380.60, 17,070.90 and 4,805.08

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Solution

The fourth proportional to 11,380.60, 17,070.90 and 4,805.08 is: 7,207.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,380.60 : 17,070.90 = 4,805.08 : x
  2. Step 2: Convert to fraction form
    11,380.60/17,070.90 = 4,805.08/x
  3. Step 3: Cross multiply
    11,380.60x = 17,070.90 × 4,805.08
  4. Step 4: Simplify right side
    11,380.60x = 82,027,040.17
  5. Step 5: Solve for x
    x = 82,027,040.17/11,380.60
  6. Step 6: Final answer
    x = 7,207.62

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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.