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Finding the Fourth Proportional to 7,168.60, 10,749.44 and 3,659.80

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Solution

The fourth proportional to 7,168.60, 10,749.44 and 3,659.80 is: 5,487.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,168.60 : 10,749.44 = 3,659.80 : x
  2. Step 2: Convert to fraction form
    7,168.60/10,749.44 = 3,659.80/x
  3. Step 3: Cross multiply
    7,168.60x = 10,749.44 × 3,659.80
  4. Step 4: Simplify right side
    7,168.60x = 39,340,800.51
  5. Step 5: Solve for x
    x = 39,340,800.51/7,168.60
  6. Step 6: Final answer
    x = 5,487.93

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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.