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Finding the Fourth Proportional to 7,239.75, 10,859.69 and 3,955.60

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Solution

The fourth proportional to 7,239.75, 10,859.69 and 3,955.60 is: 5,933.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,239.75 : 10,859.69 = 3,955.60 : x
  2. Step 2: Convert to fraction form
    7,239.75/10,859.69 = 3,955.60/x
  3. Step 3: Cross multiply
    7,239.75x = 10,859.69 × 3,955.60
  4. Step 4: Simplify right side
    7,239.75x = 42,956,589.76
  5. Step 5: Solve for x
    x = 42,956,589.76/7,239.75
  6. Step 6: Final answer
    x = 5,933.44

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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.