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Finding the Fourth Proportional to 2,485.30, 3,729.30 and 1,024.60

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Solution

The fourth proportional to 2,485.30, 3,729.30 and 1,024.60 is: 1,537.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.30 : 3,729.30 = 1,024.60 : x
  2. Step 2: Convert to fraction form
    2,485.30/3,729.30 = 1,024.60/x
  3. Step 3: Cross multiply
    2,485.30x = 3,729.30 × 1,024.60
  4. Step 4: Simplify right side
    2,485.30x = 3,821,040.78
  5. Step 5: Solve for x
    x = 3,821,040.78/2,485.30
  6. Step 6: Final answer
    x = 1,537.46

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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.