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Finding the Fourth Proportional to 3,569.95, 5,353.10 and 1,379.31

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Solution

The fourth proportional to 3,569.95, 5,353.10 and 1,379.31 is: 2,068.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,569.95 : 5,353.10 = 1,379.31 : x
  2. Step 2: Convert to fraction form
    3,569.95/5,353.10 = 1,379.31/x
  3. Step 3: Cross multiply
    3,569.95x = 5,353.10 × 1,379.31
  4. Step 4: Simplify right side
    3,569.95x = 7,383,584.36
  5. Step 5: Solve for x
    x = 7,383,584.36/3,569.95
  6. Step 6: Final answer
    x = 2,068.26

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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.