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Finding the Fourth Proportional to 4,980.64, 7,461.24 and 3,661.96

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Solution

The fourth proportional to 4,980.64, 7,461.24 and 3,661.96 is: 5,485.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,980.64 : 7,461.24 = 3,661.96 : x
  2. Step 2: Convert to fraction form
    4,980.64/7,461.24 = 3,661.96/x
  3. Step 3: Cross multiply
    4,980.64x = 7,461.24 × 3,661.96
  4. Step 4: Simplify right side
    4,980.64x = 27,322,762.43
  5. Step 5: Solve for x
    x = 27,322,762.43/4,980.64
  6. Step 6: Final answer
    x = 5,485.79

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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.