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Finding the Fourth Proportional to 2,908.56, 4,362.08 and 1,983.95

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Solution

The fourth proportional to 2,908.56, 4,362.08 and 1,983.95 is: 2,975.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,908.56 : 4,362.08 = 1,983.95 : x
  2. Step 2: Convert to fraction form
    2,908.56/4,362.08 = 1,983.95/x
  3. Step 3: Cross multiply
    2,908.56x = 4,362.08 × 1,983.95
  4. Step 4: Simplify right side
    2,908.56x = 8,654,116.89
  5. Step 5: Solve for x
    x = 8,654,116.89/2,908.56
  6. Step 6: Final answer
    x = 2,975.40

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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.