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Finding the Fourth Proportional to 6,479.28, 8,939.88 and 4,804.56

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Solution

The fourth proportional to 6,479.28, 8,939.88 and 4,804.56 is: 6,629.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,479.28 : 8,939.88 = 4,804.56 : x
  2. Step 2: Convert to fraction form
    6,479.28/8,939.88 = 4,804.56/x
  3. Step 3: Cross multiply
    6,479.28x = 8,939.88 × 4,804.56
  4. Step 4: Simplify right side
    6,479.28x = 42,952,189.85
  5. Step 5: Solve for x
    x = 42,952,189.85/6,479.28
  6. Step 6: Final answer
    x = 6,629.16

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1.5x scale

Why These Related Problems?

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