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Finding the Fourth Proportional to 1,606.68, 2,216.54 and 1,081.80

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Solution

The fourth proportional to 1,606.68, 2,216.54 and 1,081.80 is: 1,492.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,606.68 : 2,216.54 = 1,081.80 : x
  2. Step 2: Convert to fraction form
    1,606.68/2,216.54 = 1,081.80/x
  3. Step 3: Cross multiply
    1,606.68x = 2,216.54 × 1,081.80
  4. Step 4: Simplify right side
    1,606.68x = 2,397,852.97
  5. Step 5: Solve for x
    x = 2,397,852.97/1,606.68
  6. Step 6: Final answer
    x = 1,492.43

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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.