Home / 3,542.31-5,309.70-1,690.89

Finding the Fourth Proportional to 3,542.31, 5,309.70 and 1,690.89

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Solution

The fourth proportional to 3,542.31, 5,309.70 and 1,690.89 is: 2,534.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,542.31 : 5,309.70 = 1,690.89 : x
  2. Step 2: Convert to fraction form
    3,542.31/5,309.70 = 1,690.89/x
  3. Step 3: Cross multiply
    3,542.31x = 5,309.70 × 1,690.89
  4. Step 4: Simplify right side
    3,542.31x = 8,978,118.63
  5. Step 5: Solve for x
    x = 8,978,118.63/3,542.31
  6. Step 6: Final answer
    x = 2,534.54

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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.