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Finding the Fourth Proportional to 6,873.74, 9,485.78 and 3,729.92

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Solution

The fourth proportional to 6,873.74, 9,485.78 and 3,729.92 is: 5,147.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,873.74 : 9,485.78 = 3,729.92 : x
  2. Step 2: Convert to fraction form
    6,873.74/9,485.78 = 3,729.92/x
  3. Step 3: Cross multiply
    6,873.74x = 9,485.78 × 3,729.92
  4. Step 4: Simplify right side
    6,873.74x = 35,381,219.59
  5. Step 5: Solve for x
    x = 35,381,219.59/6,873.74
  6. Step 6: Final answer
    x = 5,147.31

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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.