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Finding the Fourth Proportional to 3,480.66, 4,803.17 and 1,908.65

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Solution

The fourth proportional to 3,480.66, 4,803.17 and 1,908.65 is: 2,633.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.66 : 4,803.17 = 1,908.65 : x
  2. Step 2: Convert to fraction form
    3,480.66/4,803.17 = 1,908.65/x
  3. Step 3: Cross multiply
    3,480.66x = 4,803.17 × 1,908.65
  4. Step 4: Simplify right side
    3,480.66x = 9,167,572.89
  5. Step 5: Solve for x
    x = 9,167,572.89/3,480.66
  6. Step 6: Final answer
    x = 2,633.86

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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.