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Finding the Fourth Proportional to 6,480.64, 8,939.24 and 4,491.28

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Solution

The fourth proportional to 6,480.64, 8,939.24 and 4,491.28 is: 6,195.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,480.64 : 8,939.24 = 4,491.28 : x
  2. Step 2: Convert to fraction form
    6,480.64/8,939.24 = 4,491.28/x
  3. Step 3: Cross multiply
    6,480.64x = 8,939.24 × 4,491.28
  4. Step 4: Simplify right side
    6,480.64x = 40,148,629.83
  5. Step 5: Solve for x
    x = 40,148,629.83/6,480.64
  6. Step 6: Final answer
    x = 6,195.16

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.