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Finding the Fourth Proportional to 2,485.98, 3,728.88 and 637.11

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Solution

The fourth proportional to 2,485.98, 3,728.88 and 637.11 is: 955.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.98 : 3,728.88 = 637.11 : x
  2. Step 2: Convert to fraction form
    2,485.98/3,728.88 = 637.11/x
  3. Step 3: Cross multiply
    2,485.98x = 3,728.88 × 637.11
  4. Step 4: Simplify right side
    2,485.98x = 2,375,708.33
  5. Step 5: Solve for x
    x = 2,375,708.33/2,485.98
  6. Step 6: Final answer
    x = 955.64

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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.