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Finding the Fourth Proportional to 2,485.47, 3,728.21 and 1,182.99

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Solution

The fourth proportional to 2,485.47, 3,728.21 and 1,182.99 is: 1,774.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.47 : 3,728.21 = 1,182.99 : x
  2. Step 2: Convert to fraction form
    2,485.47/3,728.21 = 1,182.99/x
  3. Step 3: Cross multiply
    2,485.47x = 3,728.21 × 1,182.99
  4. Step 4: Simplify right side
    2,485.47x = 4,410,429.23
  5. Step 5: Solve for x
    x = 4,410,429.23/2,485.47
  6. Step 6: Final answer
    x = 1,774.49

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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.