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Finding the Fourth Proportional to 2,485.58, 3,728.15 and 1,169.02

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Solution

The fourth proportional to 2,485.58, 3,728.15 and 1,169.02 is: 1,753.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.58 : 3,728.15 = 1,169.02 : x
  2. Step 2: Convert to fraction form
    2,485.58/3,728.15 = 1,169.02/x
  3. Step 3: Cross multiply
    2,485.58x = 3,728.15 × 1,169.02
  4. Step 4: Simplify right side
    2,485.58x = 4,358,283.16
  5. Step 5: Solve for x
    x = 4,358,283.16/2,485.58
  6. Step 6: Final answer
    x = 1,753.43

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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.