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Finding the Fourth Proportional to 3,276.65, 4,917 and 1,328.87

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Solution

The fourth proportional to 3,276.65, 4,917 and 1,328.87 is: 1,994.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,276.65 : 4,917 = 1,328.87 : x
  2. Step 2: Convert to fraction form
    3,276.65/4,917 = 1,328.87/x
  3. Step 3: Cross multiply
    3,276.65x = 4,917 × 1,328.87
  4. Step 4: Simplify right side
    3,276.65x = 6,534,053.79
  5. Step 5: Solve for x
    x = 6,534,053.79/3,276.65
  6. Step 6: Final answer
    x = 1,994.13

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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.