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Finding the Fourth Proportional to 3,551.04, 5,326.80 and 1,086.04

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Solution

The fourth proportional to 3,551.04, 5,326.80 and 1,086.04 is: 1,629.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,551.04 : 5,326.80 = 1,086.04 : x
  2. Step 2: Convert to fraction form
    3,551.04/5,326.80 = 1,086.04/x
  3. Step 3: Cross multiply
    3,551.04x = 5,326.80 × 1,086.04
  4. Step 4: Simplify right side
    3,551.04x = 5,785,117.87
  5. Step 5: Solve for x
    x = 5,785,117.87/3,551.04
  6. Step 6: Final answer
    x = 1,629.13

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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.