Home / 3,687.56-5,531.58-1,379

Finding the Fourth Proportional to 3,687.56, 5,531.58 and 1,379

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Solution

The fourth proportional to 3,687.56, 5,531.58 and 1,379 is: 2,068.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687.56 : 5,531.58 = 1,379 : x
  2. Step 2: Convert to fraction form
    3,687.56/5,531.58 = 1,379/x
  3. Step 3: Cross multiply
    3,687.56x = 5,531.58 × 1,379
  4. Step 4: Simplify right side
    3,687.56x = 7,628,048.82
  5. Step 5: Solve for x
    x = 7,628,048.82/3,687.56
  6. Step 6: Final answer
    x = 2,068.59

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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.