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Finding the Fourth Proportional to 3,609.06, 4,978.17 and 3,015.06

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Solution

The fourth proportional to 3,609.06, 4,978.17 and 3,015.06 is: 4,158.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609.06 : 4,978.17 = 3,015.06 : x
  2. Step 2: Convert to fraction form
    3,609.06/4,978.17 = 3,015.06/x
  3. Step 3: Cross multiply
    3,609.06x = 4,978.17 × 3,015.06
  4. Step 4: Simplify right side
    3,609.06x = 15,009,481.24
  5. Step 5: Solve for x
    x = 15,009,481.24/3,609.06
  6. Step 6: Final answer
    x = 4,158.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.