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Finding the Fourth Proportional to 4,928.08, 7,389.80 and 1,805.88

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Solution

The fourth proportional to 4,928.08, 7,389.80 and 1,805.88 is: 2,707.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,928.08 : 7,389.80 = 1,805.88 : x
  2. Step 2: Convert to fraction form
    4,928.08/7,389.80 = 1,805.88/x
  3. Step 3: Cross multiply
    4,928.08x = 7,389.80 × 1,805.88
  4. Step 4: Simplify right side
    4,928.08x = 13,345,092.02
  5. Step 5: Solve for x
    x = 13,345,092.02/4,928.08
  6. Step 6: Final answer
    x = 2,707.97

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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.