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Finding the Fourth Proportional to 2,485.54, 3,728.30 and 636.59

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Solution

The fourth proportional to 2,485.54, 3,728.30 and 636.59 is: 954.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.54 : 3,728.30 = 636.59 : x
  2. Step 2: Convert to fraction form
    2,485.54/3,728.30 = 636.59/x
  3. Step 3: Cross multiply
    2,485.54x = 3,728.30 × 636.59
  4. Step 4: Simplify right side
    2,485.54x = 2,373,398.50
  5. Step 5: Solve for x
    x = 2,373,398.50/2,485.54
  6. Step 6: Final answer
    x = 954.88

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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.