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Finding the Fourth Proportional to 3,321.45, 4,659.75 and 3,321.45

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Solution

The fourth proportional to 3,321.45, 4,659.75 and 3,321.45 is: 4,659.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,321.45 : 4,659.75 = 3,321.45 : x
  2. Step 2: Convert to fraction form
    3,321.45/4,659.75 = 3,321.45/x
  3. Step 3: Cross multiply
    3,321.45x = 4,659.75 × 3,321.45
  4. Step 4: Simplify right side
    3,321.45x = 15,477,126.64
  5. Step 5: Solve for x
    x = 15,477,126.64/3,321.45
  6. Step 6: Final answer
    x = 4,659.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.